1543601 - Incorrect white border flashes in the layerslider demo with Webrender enabled

Status: RESOLVED DUPLICATE of bug 1574493

(Core :: Graphics: WebRender, defect, P3)

Description

[nayinain]

Attachment: test.html

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

1. Enable WebRender
2. Open the test.html
3. Move the cursor over the image.

Actual results:

Incorrect white border flashes on both left and right sides of the image.

Expected results:

White border flashing should not occur.

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Sorry for my bad English.

Comment 1

[nayinain]

Attachment: screenshots.gif

regression range:

2019-04-11T16:16:04: INFO : Narrowed inbound regression window from [e3670e52, 43d250c9] (3 builds) to [ac3ba5d1, 43d250c9] (2 builds) (~1 steps left)
2019-04-11T16:16:04: DEBUG : Starting merge handling...
2019-04-11T16:16:04: DEBUG : Using url: https://hg.mozilla.org/integration/autoland/json-pushes?changeset=43d250c96e71928eb14dbd6dde03595959b36f89&full=1
2019-04-11T16:16:06: DEBUG : Found commit message:
Bug 1523882 - Rework snapping logic in clip mask generate to fix uneven box shadows. r=kvark,nical

Differential Revision: https://phabricator.services.mozilla.com/D18060

2019-04-11T16:16:06: DEBUG : Did not find a branch, checking all integration branches
2019-04-11T16:16:06: INFO : The bisection is done.
2019-04-11T16:16:06: INFO : Stopped

Comment 2

[Andrew Osmond [:aosmond] (he/him)]

No longer reproduces for me on latest nightly (20190914212452). Please reopen if you still observe the problem.