[Affected versions]: - latest Developer Edition 53.0a2 - Firefox 52 beta 8 [Unaffected versions]: - latest Nightly 54.0a1 [Affected platforms]: - Windows 10 64-bit - macOS 10.12.3 - Ubuntu 16.04 32-bit [Steps to reproduce]: 1. Start Firefox 2. Make sure e10s is disabled (where e10s is enabled by default just open a New Non-e10s window from Panel Menu) 3. Load the iframe containing a website using grid demo: https://goo.gl/SRfz8R - download and save on drive 4. Open inspector and activate Grid tool 5. Refresh the page [Expected result]: - Grid highlighter does not change position before is dismissed by the page refresh [Actual result]: - Grid highlighter changes position just before it's dismissed by the page refresh. [Regression range]: - This is not actually a regression since latest Nightly is not affected and only an uplift should be required Last good revision: 365ed2bc91f669d6a1bdbdd1c125bc01050409cc First bad revision: 2ae8554e0989e12e9ef5755a4171841b02df7f11 Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=365ed2bc91f669d6a1bdbdd1c125bc01050409cc&tochange=2ae8554e0989e12e9ef5755a4171841b02df7f11 Culprit: 2ae8554e0989 Panos Astithas — Don't autofocus buttons when about:certerror is embedded in an iframe (bug 1336352). r=nhnt11 [Additional notes]: - Gif showing the issue is attached. - Note that this does not reproduce on latest Nightly so, a possible quick fix to this would be to uplift bug 1336352 on 53 and 52 because it affects this feature. - I also marked 54 as affected since build from first bad is also Nightly 54 even though is an older build than today.

And here is the .gif showing the issue.

Perhaps we should consider uplifting the fixes you have in this area?

(In reply to Gabriel Luong [:gl][1 biz day review guarantee] (ΦωΦ) from comment #2) > Perhaps we should consider uplifting the fixes you have in this area? I think it would help, it's worth a try anyway (I'm referring of course on bug 1312103).

Needs to be checked after Bug 1342310 lands.

Actually just verified, this bug was fixed by Bug 1312103. I am closing this one as duplicate. If an uplift is needed, please request it in Bug 1312103.