diff --git a/reg-tests/cache/caching_rules.vtc b/reg-tests/cache/caching_rules.vtc
index c20a720..114b2fd 100644
--- a/reg-tests/cache/caching_rules.vtc
+++ b/reg-tests/cache/caching_rules.vtc
@@ -78,6 +78,12 @@
 } -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/expires.vtc b/reg-tests/cache/expires.vtc
index 51c7487..037f09f 100644
--- a/reg-tests/cache/expires.vtc
+++ b/reg-tests/cache/expires.vtc
@@ -40,6 +40,12 @@
 } -start
 
 haproxy h1 -conf {
+       global
+               # WT: limit false-positives causing "HTTP header incomplete" due to
+               # idle server connections being randomly used and randomly expiring
+               # under us.
+               tune.idle-pool.shared off
+
        defaults
                mode http
                ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/if-modified-since.vtc b/reg-tests/cache/if-modified-since.vtc
index e491e46..8ae1cce 100644
--- a/reg-tests/cache/if-modified-since.vtc
+++ b/reg-tests/cache/if-modified-since.vtc
@@ -40,6 +40,12 @@
 } -start
 
 haproxy h1 -conf {
+       global
+               # WT: limit false-positives causing "HTTP header incomplete" due to
+               # idle server connections being randomly used and randomly expiring
+               # under us.
+               tune.idle-pool.shared off
+
        defaults
                mode http
                ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/if-none-match.vtc b/reg-tests/cache/if-none-match.vtc
index c5391c9..ba3336a 100644
--- a/reg-tests/cache/if-none-match.vtc
+++ b/reg-tests/cache/if-none-match.vtc
@@ -25,6 +25,12 @@
 } -start
 
 haproxy h1 -conf {
+       global
+               # WT: limit false-positives causing "HTTP header incomplete" due to
+               # idle server connections being randomly used and randomly expiring
+               # under us.
+               tune.idle-pool.shared off
+
        defaults
                mode http
                ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/sample_fetches.vtc b/reg-tests/cache/sample_fetches.vtc
index 73e6e1b..973b3ad 100644
--- a/reg-tests/cache/sample_fetches.vtc
+++ b/reg-tests/cache/sample_fetches.vtc
@@ -44,6 +44,12 @@
 } -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/vary.vtc b/reg-tests/cache/vary.vtc
index f3425d0..0b5d139 100644
--- a/reg-tests/cache/vary.vtc
+++ b/reg-tests/cache/vary.vtc
@@ -127,6 +127,12 @@
 } -start
 
 haproxy h1 -conf {
+       global
+               # WT: limit false-positives causing "HTTP header incomplete" due to
+               # idle server connections being randomly used and randomly expiring
+               # under us.
+               tune.idle-pool.shared off
+
        defaults
                mode http
                ${no-htx} option http-use-htx
diff --git a/reg-tests/cache/vary_accept_encoding.vtc b/reg-tests/cache/vary_accept_encoding.vtc
index 185ad05..852ac29 100644
--- a/reg-tests/cache/vary_accept_encoding.vtc
+++ b/reg-tests/cache/vary_accept_encoding.vtc
@@ -92,6 +92,12 @@
 
 
 haproxy h1 -conf {
+       global
+               # WT: limit false-positives causing "HTTP header incomplete" due to
+               # idle server connections being randomly used and randomly expiring
+               # under us.
+               tune.idle-pool.shared off
+
        defaults
                mode http
                ${no-htx} option http-use-htx
diff --git a/reg-tests/compression/etags_conversion.vtc b/reg-tests/compression/etags_conversion.vtc
index 0cae679..48e7955 100644
--- a/reg-tests/compression/etags_conversion.vtc
+++ b/reg-tests/compression/etags_conversion.vtc
@@ -106,6 +106,12 @@
 
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/compression/vary.vtc b/reg-tests/compression/vary.vtc
index 0a060e4..a905f9c 100644
--- a/reg-tests/compression/vary.vtc
+++ b/reg-tests/compression/vary.vtc
@@ -61,6 +61,12 @@
 
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/converter/json_query.vtc b/reg-tests/converter/json_query.vtc
index ade7b4c..b420942 100644
--- a/reg-tests/converter/json_query.vtc
+++ b/reg-tests/converter/json_query.vtc
@@ -9,6 +9,12 @@
 } -repeat 8 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
 	mode http
 	timeout connect 1s
diff --git a/reg-tests/converter/secure_memcmp.vtc b/reg-tests/converter/secure_memcmp.vtc
index f9341f9..b16e021 100644
--- a/reg-tests/converter/secure_memcmp.vtc
+++ b/reg-tests/converter/secure_memcmp.vtc
@@ -16,6 +16,12 @@
 } -repeat 7 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
 	mode http
 	timeout connect 1s
diff --git a/reg-tests/http-messaging/h1_to_h1.vtc b/reg-tests/http-messaging/h1_to_h1.vtc
index 5b02f17..c7d0085 100644
--- a/reg-tests/http-messaging/h1_to_h1.vtc
+++ b/reg-tests/http-messaging/h1_to_h1.vtc
@@ -115,6 +115,12 @@
 } -repeat 3 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
 	mode http
 	${no-htx} option http-use-htx
diff --git a/reg-tests/http-messaging/h2_to_h1.vtc b/reg-tests/http-messaging/h2_to_h1.vtc
index 481aded..0d2b1e5 100644
--- a/reg-tests/http-messaging/h2_to_h1.vtc
+++ b/reg-tests/http-messaging/h2_to_h1.vtc
@@ -34,6 +34,12 @@
 } -repeat 2 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
 	#log stdout format raw daemon
 	mode http
diff --git a/reg-tests/http-messaging/http_abortonclose.vtc b/reg-tests/http-messaging/http_abortonclose.vtc
index c074982..ae0d237 100644
--- a/reg-tests/http-messaging/http_abortonclose.vtc
+++ b/reg-tests/http-messaging/http_abortonclose.vtc
@@ -46,6 +46,12 @@
 } -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/http-messaging/http_bodyless_response.vtc b/reg-tests/http-messaging/http_bodyless_response.vtc
index f45a7d6..6f36545 100644
--- a/reg-tests/http-messaging/http_bodyless_response.vtc
+++ b/reg-tests/http-messaging/http_bodyless_response.vtc
@@ -30,6 +30,12 @@
 } -repeat 2 -start
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         ${no-htx} option http-use-htx
diff --git a/reg-tests/http-rules/except-forwardfor-originalto.vtc b/reg-tests/http-rules/except-forwardfor-originalto.vtc
index 942c4e2..bb346dd 100644
--- a/reg-tests/http-rules/except-forwardfor-originalto.vtc
+++ b/reg-tests/http-rules/except-forwardfor-originalto.vtc
@@ -7,6 +7,12 @@
 feature ignore_unknown_macro
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         timeout connect 1s
diff --git a/reg-tests/http-rules/http_return.vtc b/reg-tests/http-rules/http_return.vtc
index a50f1fe..8189028 100644
--- a/reg-tests/http-rules/http_return.vtc
+++ b/reg-tests/http-rules/http_return.vtc
@@ -6,6 +6,12 @@
 feature ignore_unknown_macro
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         timeout connect 1s
diff --git a/reg-tests/http-rules/normalize_uri.vtc b/reg-tests/http-rules/normalize_uri.vtc
index 47032d9..42c4c42 100644
--- a/reg-tests/http-rules/normalize_uri.vtc
+++ b/reg-tests/http-rules/normalize_uri.vtc
@@ -12,6 +12,10 @@
 
 haproxy h1 -conf {
     global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
         expose-experimental-directives
 
     defaults
diff --git a/reg-tests/lua/set_var.vtc b/reg-tests/lua/set_var.vtc
index fc21b41..af4cbf1 100644
--- a/reg-tests/lua/set_var.vtc
+++ b/reg-tests/lua/set_var.vtc
@@ -6,6 +6,12 @@
 
 haproxy h1 -conf {
     global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
+    global
         lua-load ${testdir}/set_var.lua
 
     frontend fe1
diff --git a/reg-tests/lua/txn_get_priv-thread.vtc b/reg-tests/lua/txn_get_priv-thread.vtc
index 77e333d..6f5d632 100644
--- a/reg-tests/lua/txn_get_priv-thread.vtc
+++ b/reg-tests/lua/txn_get_priv-thread.vtc
@@ -7,6 +7,11 @@
 
 haproxy h1 -conf {
     global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
         lua-load-per-thread ${testdir}/txn_get_priv.lua
         lua-load-per-thread ${testdir}/txn_get_priv-print_r.lua
 
diff --git a/reg-tests/sample_fetches/ubase64.vtc b/reg-tests/sample_fetches/ubase64.vtc
index d6973e3..0122bad 100644
--- a/reg-tests/sample_fetches/ubase64.vtc
+++ b/reg-tests/sample_fetches/ubase64.vtc
@@ -5,6 +5,12 @@
 feature ignore_unknown_macro
 
 haproxy h1 -conf {
+    global
+        # WT: limit false-positives causing "HTTP header incomplete" due to
+        # idle server connections being randomly used and randomly expiring
+        # under us.
+        tune.idle-pool.shared off
+
     defaults
         mode http
         timeout connect 1s
diff --git a/reg-tests/webstats/webstats-scope-and-post-change.vtc b/reg-tests/webstats/webstats-scope-and-post-change.vtc
index a77483b..fe8b333 100644
--- a/reg-tests/webstats/webstats-scope-and-post-change.vtc
+++ b/reg-tests/webstats/webstats-scope-and-post-change.vtc
@@ -8,6 +8,11 @@
 
 haproxy h1 -conf {
   global
+    # WT: limit false-positives causing "HTTP header incomplete" due to
+    # idle server connections being randomly used and randomly expiring
+    # under us.
+    tune.idle-pool.shared off
+
     stats socket /tmp/haproxy.socket level admin
 
   defaults