Open Bug 1259343 Opened 8 years ago Updated 2 years ago

"TypeError: oldState is null" occurred when the timeline scrubber of CSS transition animation is moved by mouse

Categories

(DevTools :: Inspector: Animations, defect, P2)

defect

Tracking

(Not tracked)

People

(Reporter: daisuke, Unassigned)

Details

(Whiteboard: [btpp-fix-later])

Attachments

(1 file)

Attached file transition.html
The actual error message was,
JavaScript error: resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/animation.js, line 293: TypeError: oldState is null

I attach a sample html.
Thanks for filing this Daisuke. I had seen this too.
I believe this does not cause the timeline to break, but we should still investigate and fix this issue.
Triaging this as a P2.
Priority: -- → P2
Whiteboard: [btpp-fix-later]
Product: Firefox → DevTools
Severity: normal → S3
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