Closed
Bug 1417685
Opened 7 years ago
Closed 7 years ago
CSS filter() on :root element affects layout of fixed positioned elements and performance
Categories
(Core :: Layout, defect)
Tracking
()
RESOLVED
DUPLICATE
of bug 1226095
People
(Reporter: f1041701, Unassigned)
References
Details
Attachments
(1 file)
from about:support
Version 57.0b14
Build ID 20171102181127
Steps to reproduce:
1. install https://addons.mozilla.org/en-US/firefox/addon/nightreader/ version 1.7.41
2. visit https://meguca.org/a/catalog [nsfw]
3. open a thread with > 1000 posts
4. select the cogwheel on the top right, go to style, select "glass"
5. a) take note of the scroll behavior of the bar on the top
b) attempt to hover over an image
c) use autoscrolling to scroll through the thread
6. open devtools
7. select the <html> element, disable the --invert CSS var that has been set on :root by the extension
8. repeat step 4, observe differences
I have recorded the steps 4-8 in the attached video.
Summary: filter on :root element affects layout of fixed positioned elements and performance → CSS filter() on :root element affects layout of fixed positioned elements and performance
I can confirm this. It seems not just limited to :root, but affects any fixed position element that has an ancestor that has a filter()
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Updated•7 years ago
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Component: General → Layout
Product: Firefox → Core
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Updated•7 years ago
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Updated•7 years ago
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Status: UNCONFIRMED → RESOLVED
Closed: 7 years ago
Resolution: --- → DUPLICATE
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Description
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