This landed in https://chromium-review.googlesource.com/c/chromium/src/+/1011353, but I hadn't created a bug for it.

+cmasso@. I'd failed to make a bug for this CL, but it's quite trivial and not having it in the branch is causing pretty significant issues for our UI. I'm not sure if mentioning the CL here will work with the auto-merge-request bot, but could you please take a look when you have a sec?

Thanks for quick response! This has been merged.

 Issue 834347  has been merged into this issue.

 Issue 834044  has been merged into this issue.

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Verified fix on build 67.0.3396.16.  The optimization have been disabled.
Specifically there was a fade out/in issue introduced by this change, removing this change removes the issues in the current builds.