1429537 - Browser chrome showing page content

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P1)

Description

[Stuart Philp :sphilp]

Attachment: content-in-tabbar.mov

Nightly 59.0a1 (2018-01-10) (64-bit), OSX High Sierra, with WebRender and Servo Chrome both enabled (perhaps a bug in the latter?).

When viewing a saved trip itinerary in Egencia, the tab bar will show pieces of the pages content. The content that appears in the tab bar will change as you scroll the website.

I've attached a video to show it in action.

Comment 1

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

Based on the description this is likely the same root cause as bug 1420754.

Comment 2

[Glenn Watson [:gw]]

This will be fixed once https://github.com/servo/webrender/pull/2382 makes its way into a Gecko nightly via the next WR update.

It's possible there are some other similar sounding bugs that may also be fixed by this, since it fixes a fairly general problem with rendering outside a task bounds.

Comment 3

[Milan Sreckovic [:milan] (needinfo for best results)]

Are there ref tests we can create to catch this problem?

Comment 4

[Milan Sreckovic [:milan] (needinfo for best results)]

This being fixed with a PR - is there a Gecko side reftest that we can add that catches this problem?

Comment 5

[Glenn Watson [:gw]]

It's quite WR-specific in this case - the bug depends on the current contents and layout of the internal texture cache. We have added reftests in wrench itself to catch this in the future though.