[Webkit-unassigned] [Bug 176571] New: Web Inspector: Canvas: unexpected RecordingAction tree outline scrolling behavior

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=176571

            Bug ID: 176571
           Summary: Web Inspector: Canvas: unexpected RecordingAction tree
                    outline scrolling behavior
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattbaker at apple.com
                CC: inspector-bugzilla-changes at group.apple.com

Created attachment 320207

  --> https://bugs.webkit.org/attachment.cgi?id=320207&action=review

[Canvas Recording] all-actions.json

Summary:
Unexpected RecordingAction tree outline scrolling behavior. Scroll position changes when using up/down keys to change the selection.

Reduction 1:
1. Import attached recording
2. Scroll to the bottom of the tree
3. Click to select frame 63
4. Press down-arrow repeatedly to select the last frame

Expected:
   Selected item changes, scroll position does not.
Actual:
   Scroll position moves with the selected item.

Reduction 2:
1. Import attached recording
2. Scroll to the bottom of the tree
3. Click to select the last frame
4. Press up-arrow repeatedly to select the first frame

Expected:
   Selected item moves while scroll position remains fixed, until the selected item is at the top of the tree
Actual:
   Scroll position moves while the selection appears to remain in place.

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