1626736 - Assertion failure: item should have finite clip with respect to aASR

Status: NEW

(Core :: Web Painting, defect, P2)

Description

[Kartikaya Gupta (email:[e-mail])]

Assertion at https://searchfox.org/mozilla-central/rev/7fba7adfcd695343236de0c12e8d384c9b7cd237/layout/painting/nsDisplayList.cpp#3551 is failing, pretty reliably. I'm using a local debug build with latest m-c on Windows with WebRender enabled. I'm logged into Facebook, the using the "new facebook" UX (per bug 1623566 comment 0) and the assertion happens I accept a friend request in the left pane. It looks like some sort of in-page popup element appears between accepting the friend request and the assertion failure, so maybe that popup element generates a display list that is violating the assertion.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug.
:mattwoodrow, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 2

[Kartikaya Gupta (email:[e-mail])]

(In reply to Kartikaya Gupta (email:[e-mail]) from comment #0)

It looks like some sort of in-page popup element appears between accepting the friend request and the assertion failure, so maybe that popup element generates a display list that is violating the assertion.

Based on experience with a non-debug build I think the popup element is one that appears if you try to accept a friend request from someone who already has the max number of friends. The popup is a message to the effect of "this person already has the max number of friends".