diff --git a/testing/buildbot/filters/bfcache.browser_tests.filter b/testing/buildbot/filters/bfcache.browser_tests.filter
index 9d1ba54890db73..a7398fb25ef504 100644
--- a/testing/buildbot/filters/bfcache.browser_tests.filter
+++ b/testing/buildbot/filters/bfcache.browser_tests.filter
@@ -44,3 +44,11 @@
 -TabManagerTest.TabFreezeAndMakeVisible
 -TabManagerTest.TabFreezeAndUnfreeze
 -TabManagerTest.TabFreezeAndUrgentDiscard
+
+# An extension is non-idle because its option page is opened. When it is
+# navigated to about:blank, it should become idle again. This doesn't happen
+# with the BackForwardCache, because the old page is still there.
+-ExtensionCrxInstallerTest.InstallDelayedUntilNextUpdate
+
+# Very flaky. Can't reproduce locally, it always succeed.
+-SystemNetworkContextManagerMaxConnectionsPerProxyBrowsertest.MaxConnectionsPerProxy
diff --git a/testing/buildbot/filters/bfcache.content_browsertests.filter b/testing/buildbot/filters/bfcache.content_browsertests.filter
index 2ad2b8ac6ce91e..7c3ee33370bbe5 100644
--- a/testing/buildbot/filters/bfcache.content_browsertests.filter
+++ b/testing/buildbot/filters/bfcache.content_browsertests.filter
@@ -128,3 +128,9 @@
 # A frozen page failed to execute Javascript.
 # See https://crbug.com/991194
 -WebContentsImplBrowserTest.SetPageFrozen
+
+# Check failed: popup_ || pepper_fullscreen_ in RenderWidget::OnClose()
+# https://crbug.com/992891
+-WebContentsSplitCacheBrowserTestEnabled.SplitCacheDedicatedWorkerScripts/1
+-WebContentsSplitCacheBrowserTestEnabled.SplitCacheDedicatedWorkerScripts/0
+