Open Bug 1415320 Opened 7 years ago Updated 2 years ago

Composing a new tweet on Twitter slows down as tweet gets longer

Categories

(Core :: Web Painting, enhancement, P2)

Product:
Core
Component:
Web Painting
Type:
enhancement

Tracking

()

Tracking Flags:
Tracking Status
platform-rel --- ?
firefox58 --- affected

People

(Reporter: TD-Linux, Unassigned)

References

(
URL
)

Details

(Whiteboard: [platform-rel-Twitter])

Attachments

(1 file)

twitter_profile.json
5.57 MB, application/json
Details
Attached file twitter_profile.json — 
Reproduction:

1. Go to twitter.com
2. Log in
3. Start composing a new tweet (check that 280 characters are enabled - there will be a circle glyph to show size in the bottom right)
4. Hold down a
5. Watch as framerate plummets past about 100 characters

Profile from devtools attached. Most of the time seems spent in paint, which spends over 100ms per frame.
Priority: -- → P2
platform-rel: --- → ?
Whiteboard: [platform-rel-Twitter]
Severity: normal → S3
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