1468616 - Assertion hit: "Item found was in the wrong list!"

Status: RESOLVED DUPLICATE of bug 1466010

(Core :: Web Painting, defect)

Description

[Clemens Eisserer]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0
Build ID: 20180613100146

Steps to reproduce:

had several tabs open, but this always happend during youtube playback / player interaction with WebRender enabled.


Actual results:

Hit the assertion:  MOZ_CRASH_UNSAFE_PRINTF("Item found was in the wrong list! type %d (outer type was %d at depth %d, now is %d)", GetPerFrameKey(), mOldListKey, mOldNestingDepth, aListKey);

Please see: 
https://crash-stats.mozilla.com/report/index/85f622aa-26bd-4d1e-a7e6-7df180180613
https://crash-stats.mozilla.com/report/index/e00fc171-b8c5-4fd1-ab4c-b602d0180603


Expected results:

no assertion

Comment 1

[Darkspirit]

https://crash-stats.mozilla.com/search/?moz_crash_reason=~Item%20found%20was%20in%20the%20wrong%20list%21%20type&product=Firefox&date=%3E%3D2018-06-13T02%3A00%3A46.000Z&date=%3C2018-06-14T02%3A00%3A46.000Z&_sort=-date&_facets=signature&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#facet-signature

I think this could be marked as duplicate of bug 1466010.

https://crash-stats.mozilla.com/signature/?product=Firefox&signature=MergeState%3A%3AHasMatchingItemInOldList#comments