1958080 - Fixed-position elements in Firefox on Android are clipped, due to fixed-position viewport being inflated by another transformed element

Status: NEW

(Core :: Panning and Zooming, defect)

Description

[Daniel Holbert [:dholbert]]

Attachment: testcase 1

[This is the root cause of bug 1957586]

STR:

1. Load attached testcase on Android (or in Desktop with RDM)

ACTUAL RESULTS:
The cyan-bordered element runs off the right side of the viewport (so you can't see its right-border, and some of its text gets clipped)

EXPECTED RESULTS:
The cyan-bordered element should exactly fill the viewport width and its text should all be visible.

(I'm associating this with the "viewport-compat" bug (bug 1123938); it feels like this bug must already be filed somewhere but I'm not finding it in the list of associated bugs there at first glance.)

Comment 1

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

The severity field is not set for this bug.
:botond, could you have a look please?

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