Added fix for mozbz#1623106

firefox.spec

@@ -184,6 +184,7 @@ Patch417:        bug1375074-save-restore-x28.patch
 Patch422:        mozilla-1580174-webrtc-popup.patch
 Patch423:        mozilla-1620973.patch
 Patch424:        mozilla-1615098.patch
+Patch425:        mozilla-1623106.patch
 
 # Wayland specific upstream patches
 Patch574:        firefox-pipewire.patch
@@ -386,6 +387,7 @@ This package contains results of tests executed during build.
 #%patch241 -p1 -b .kiosk-workaround
 %patch423 -p1 -b .1620973
 %patch424 -p1 -b .1615098
+%patch425 -p1 -b .1623106
 
 %patch402 -p1 -b .1196777
 %ifarch %{arm}
@@ -964,6 +966,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %changelog
 * Tue Mar 17 2020 Martin Stransky <stransky@redhat.com> - 74.0-9
 - Added fix for mozbz#1623060
+- Added fix for mozbz#1623106
 
 * Tue Mar 17 2020 Jan Grulich <jgrulich@redhat.com> - 74-0-8
 - Add support for window sharing

mozilla-1623106.patch

@@ -0,0 +1,32 @@
+changeset:   520675:823e745af09e
+tag:         tip
+user:        Martin Stransky <stransky@redhat.com>
+date:        Tue Mar 17 21:27:52 2020 +0100
+files:       widget/gtk/nsWindow.cpp
+description:
+dd2
+
+
+diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp
+--- a/widget/gtk/nsWindow.cpp
++++ b/widget/gtk/nsWindow.cpp
+@@ -2740,16 +2739,18 @@ void nsWindow::OnContainerUnrealize() {
+   }
+ }
+ 
+ void nsWindow::OnSizeAllocate(GtkAllocation* aAllocation) {
+   LOG(("nsWindow::OnSizeAllocate [%p] %d,%d -> %d x %d\n", (void*)this,
+        aAllocation->x, aAllocation->y, aAllocation->width,
+        aAllocation->height));
+ 
++  mBoundsAreValid = true;
++
+   LayoutDeviceIntSize size = GdkRectToDevicePixels(*aAllocation).Size();
+   if (mBounds.Size() == size) {
+     // We were already resized at nsWindow::OnConfigureEvent() so skip it.
+     return;
+   }
+ 
+   // Invalidate the new part of the window now for the pending paint to
+   // minimize background flashes (GDK does not do this for external resizes
+