1782425 - Grey flash when selecting text on Bugzilla with 'Translate Web Pages' add-on installed

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Gregory Pappas [:gregp]]

Attachment: grey_flash.mp4

Steps to reproduce:

1. Install TWP - Translate Web Pages
2. Navigate to https://bugzilla.mozilla.org/user_profile?user_id=575867
3. Select some text on the page

Actual results:
Grey flash

Expected results:
No grey flash

I tried bisecting and got this range. Emilio, maybe bug 1695314?

Comment 1

[Gregory Pappas [:gregp]]

Attachment: grey_flash.png

Comment 2

[Gregory Pappas [:gregp]]

Lee, I also see bug 1682194 in that range. Does this look like something that could cause?

Comment 3

[Emilio Cobos Álvarez [:emilio]]

I could repro but I don't think my patch is related at all. That extension doesn't have any float. But reading the extension source they do something different for Firefox instead of the backdrop-filter thing they have for other browsers. Not sure if that fixes it. It might be worth filing an issue in https://github.com/FilipePS/Traduzir-paginas-web/. I'd usually spend more time debugging it but it's kind of a pain to inspect the generated shadow dom of that extension.

If I change the extension source to have:

		<div id="eDivResult" style="display: none">

Then it seems to not flash, so maybe the stylesheet is loading async some times?

Comment 4

[Gregory Pappas [:gregp]]

No longer reproduces