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Description
Describe the bug
In Firefox, the active box-shadow causes rendering artifacts to appear, making the box shadow appear different widths. This may be the cause of both a border being rendered along with the box-shadow, or part of the box-shadow being inset and part being outset.
This is not a problem for Chromium browsers.
Screenshots
Firefox:
Edge / Chrome:
Additional Context
This is likely caused by a combination of a border being applied with a box shadow. Firefox's rendering of these two styles simultaneously often causes visual artifacts.