The fade is visible when widget.macos.titlebar-blend-mode.behind-window is enabled on macOS.
Categories
(Firefox :: Sidebar, defect)
Tracking
()
People
(Reporter: ypopova, Unassigned)
References
Details
Attachments
(3 files)
The fade is visible when widget.macos.titlebar-blend-mode.behind-window is enabled on macOS.
Comment 1•7 days ago
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Yulia, can you attach the report from about:support? That has the details we'll need to investigate like preferences changed and the theme you are using etc
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Comment 2•6 days ago
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Sure. Attaching the report. I am using System Theme - Auto, since it is the only theme that works with translucency.
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Comment 3•6 days ago
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Comment 4•1 day ago
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To reproduce this you'll likely need the following prefs set to true (which I don't think are apparent in the about:support output):
widget.macos.titlebar-blend-mode.behind-window
(not-needed)widget.macos.sidebar-blend-mode.behind-window
browser.theme.native-theme
Plus the system theme - Auto enabled. Based on the screenshot the OS is set to the light theme.
I have noted a similar issue with a Dark OS theme, but the effect is variable based on what is behind the window. So for example for me with the dark OS theme and translucency enabled the dark shadow stands out, however conversely if I move the window over something darker the shadow will be almost invisible.
Comment 5•1 day ago
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Comment 6•1 day ago
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If it's possible to reduce the transparency slightly that might reduce the variance? Alternatively would removing the shadows when translucency is enabled be an option to consider.
Another issue caused by the fades being more prominent is it's noticeable when they abruptly dissappear when scrolling to the top of the screen (see the screencast above for an example - though note the framerate of the gif is somewhat reduced).
Comment 7•1 day ago
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Yes, we should just use rgba() for the shadow with the system theme. We don't need to use the toolbar color there.
Description
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