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A comment on Firefox 64 Released. Parent comment

Re:Firefox 64 Released by cpmsmith on Tuesday December 11, 2018 @04:33PM (#18659119)
Anecdotal, but I've found it happens when image scaling by a factor other than 2. Affects my setup of a 4K display at 2650x1440 effective resolution, or 1.5x scaling.
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Re:Firefox 64 Released by rosser on Tuesday December 11, 2018 @05:06PM (#18659410)
Exactly this. I run at 1920x1080 effective resolution on my 15" rMBP, and 1680x945 on my 13". I see the issue on both.

When I switch to the "default" scaling (1440x900 and 1280x800, respectively), it stops. Only the 15" has a discrete GPU, eliminating that as potentially causal.

The "problem" scaling is 1.5x. The default is 2x.

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