It would be useful to know if the problem occured because.....Options/Preferences > General > 'Language & Appearance' section Click on 'Colours' button If you have the 'Override the colours specified by the content with my selection above:' selected with 'Always' And the background is set to Black and text set to white, then that selection will 'always' override whatever you desire. Suggest setting set as 'Never'.
Bug 1635151 Comment 18 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
It would be useful to know if the problem is still occuring in latest update where it is possible due to a setting: Options/Preferences > General > 'Language & Appearance' section Click on 'Colours' button If you have the 'Override the colours specified by the content with my selection above:' selected with 'Always' And the background is set to Black and text set to white, then that selection will 'always' override whatever you desire. Suggest setting set as 'Never'.