1637460 - Border image test case doesn't work on WebRender

Status: RESOLVED DUPLICATE of bug 1637440

(Core :: Graphics: WebRender, defect)

Description

[Asif Youssuff]

Attachment: Screenshot from 2020-05-12 19-44-57.png

Initially posted here: https://www.reddit.com/r/firefox/comments/gikpiv/border_image_stopped_working_in_firefox/

As of recently, divs using the border-image attribute no longer render as expected in Firefox - but show fine in Webkit/Blink.

The intention is for the right-side border to be 340 pixels wide, but the left part of the div be dynamic in width and stretched with the fill of the image. This works without issues in other browsers but as of recently not in FF.

This is a new issue, as Firefox used to be able to display this without issues - has anyone encountered this on their end? Might this be a bug or is there something wrong with the way these attributes are set up?

https://codepen.io/ivarhill/pen/yLYqYGZ

I confirmed that disabling WR resolves the issue.

13:59.72 INFO: No more integration revisions, bisection finished.
13:59.72 INFO: Last good revision: 52234324a69eb012bac0b0897a66b754f416e413
13:59.72 INFO: First bad revision: ee4b15857843597bc408305c170ff30a02ede1cc
13:59.72 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=52234324a69eb012bac0b0897a66b754f416e413&tochange=ee4b15857843597bc408305c170ff30a02ede1cc