Closed
Bug 1916200
Opened 9 months ago
Closed 8 months ago
Transitioning display does not trigger a transitionstart
Categories
(Core :: CSS Transitions and Animations, defect)
Core
CSS Transitions and Animations
Tracking
()
RESOLVED
DUPLICATE
of bug 1834877
People
(Reporter: bramus, Unassigned)
Details
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
Steps to reproduce:
(This bug was discovered while building @bramus/style-observer, a library that responds to changes in computed styles. For this it relies on CSS Transitions and transition-behavior: allow-discrete. See https://brm.us/style-observer for details about this library.)
- Navigate to https://allow-discrete-bugs.netlify.app/firefox/display-no-transition/
- Click the “Toggle
display” button
Actual results:
Nothing happens because no transitionstart gets fired after the display property is updated.
Expected results:
When clicking the “Toggle display” button, the output should update.
Forgot to mention: Tested in Firefox Nightly 131.0a1 (2024-09-01) (aarch64)
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Comment 2•8 months ago
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Dupe of bug 1834877?
Seems like it yes. Marking as duplicate.
Status: UNCONFIRMED → RESOLVED
Closed: 8 months ago
Duplicate of bug: 1834877
Resolution: --- → DUPLICATE
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Description
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