1720488 - [Twitter] Cursor inside the input fields turns invisible when navigating through the emoji

Status: RESOLVED DUPLICATE of bug 1663475

(Core :: DOM: Editor, defect)

Description

[Anca Soncutean, Desktop QA]

Attachment: screencast issue.gif

Affected versions

• 92.0a1 (2021-07-13)
• 91.0b1
• 90.0

Affected platforms

• Windows 10
• macOS 11.0

Steps to reproduce

1. Go to https://twitter.com/
2. Select the Reply option below any post
3. Type some characters
4. Insert some emoji
5. Observe the cursor

Expected result

• The cursor is visible when navigating the emoji

Actual result

• The cursor turns invisible when navigating the emoji

Regression range

• Last good revision: 13f49da109ea460665ad27c8497cb1489548450c (2016-11-17)
• First bad revision: 28e2a6dde76ab6ad4464a3662df1bd57af04398a (2016-11-18)
• Pushlog:
  https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=13f49da109ea460665ad27c8497cb1489548450c&tochange=28e2a6dde76ab6ad4464a3662df1bd57af04398a

Other notes

• Not reproducible on Chrome
• Not reproducible on Facebook or Instagram

Comment 1

[Alice0775 White]

Regression window(my local cache):
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=8cfe56f5b5d4f76163a9e8be6eaaf045926fb15a&tochange=0005d0bfadf72746ce36f4e8d09d9504b814557e

Suspect: Bug 1303654

And I confirmed that
If set layout.css.clip-path-shapes.enabled = false in the bad build, then the issue is gone.