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Issue metadata

Status: Duplicate
Merged: issue 877576
Owner: ----
Closed: Sep 12
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug

Blocking:
issue 836886



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[BGPT] Some scrollable panel can't be scrolled with scroll wheel

Project Member Reported by wangxianzhu@chromium.org, Sep 12

Issue description

r590505 r590786
1. run chrome --enable-blink-gen-property-trees
2. Go to chrome://tracing
3. Load the attached trace
4. Click any green circle
5. Click any cc::PictureLayerImpl in the bottom-left panel
6. Try to scroll the panels with scroll wheel

Expected: all panels with vertical scrollbars can be scrolled with scroll wheel

Actual: Some panels can't be scrolled with scroll wheel (while still can be scrolled by dragging the scrollbar thumbs).

 
trace_test.json.gz
311 KB Download
I think this may be  https://crbug.com/877576 
Mergedinto: 877576
Status: Duplicate (was: Available)
If I remove "body { height: 3000px; }" from the test case in  bug 877576 , the test case will behave just like this bug.

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