Closed Bug 981022 Opened 10 years ago Closed 10 years ago

will-change:transform on position:fixed elements renders incorrectly

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED WORKSFORME

People

(Reporter: bjacob, Unassigned)

References

Details

We hit this while trying to land bug 977757. See this failure:

http://mozilla-releng-blobs.s3.amazonaws.com/blobs/mozilla-inbound/sha512/2f100ca52272f49c0b9b4f7b120e67bd15d347b0f38d99826abfa7a8f6206ba31918bf082bd3e25be90af658bc1509227ac367411cbeb0893f87f846d4ef1170

In the end Vivien made this Gaia change that avoided hitting this bug:

http://hg.mozilla.org/integration/gaia-central/rev/b95e3f66303b

Note that disabling the handling of will-change:transform would also 'fix' this bug. So it seems that this bug is specifically with the intersection of will-change:transform and position:fixed.
This *might* be a dupe of bug 980454.
I suspect what we were seeing is that will-change was correctly causing a containing block. This is probably working as expected.
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → WORKSFORME
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