If you navigate to chase.com and click around on the entry fields in the upper right, the background starts to bleed through. Mozregression tracked it to: https://hg.mozilla.org/integration/autoland/json-pushes?changeset=d112cf7b2b60e6244099dc3b599a2444ba0d1da3&full=1

Matt, this is something we know about?

Andreea, can you take a look? Thanks

I'm still seeing weirdness with the login box with a build that includes the fix for bug 1451971.

This seems like a pretty serious issue. Can we up the priority? Chase is kind of a bug bank.

I can reproduce this really easily in my Nightly, but not in a local build. Trying to figure out what the difference is so that I can debug this.

Still no luck, even with the same profile. Took a stab at my best guess: https://treeherder.mozilla.org/#/jobs?repo=try&revision=5a345375ca1a918baa81f467b0f5fb3984efdb08

I can't reproduce it in the try build, hopefully that's a good sign.

Comment on attachment 8967617 [details] Bug 1452225 - Rebuild the whole subdoc when the caret changes, but don't invalidate the nsDisplaySubdocument. https://reviewboard.mozilla.org/r/236340/#review242560 LGTM.

Pushed by mikokm@gmail.com: https://hg.mozilla.org/integration/autoland/rev/32bab10d9158 Rebuild the whole subdoc when the caret changes, but don't invalidate the nsDisplaySubdocument. r=miko

I talked with Mike and he told me that the affected platform was Windows, he also verified this issue with the latest FF Nightly 61.0a1(2018-04-26) and he can't reproduce it anymore. I tested on Windows 10 x64, Ubuntu 16.04 and Mac OS X 10.13 and I can't repoduce it with FF Nightly 61.0a1(2018-04-26). Based on this I will mark this as Verified fixed.