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#11
Really interesting. All the searching I've done I don't see any other answers. I saw posts on changing group policies but they weren't really related to this. Restore Advance Settings takes you back to defaults and there is nothing about text except in the section Accessibility with an option to "Reset Text size to medium for new windows and tabs" You will see it near top.
You could establish another user and see if that user, with your tweaker installed, behaves differently. To add / delete users enter settings, click on accounts, down the left is "Family and other people".
Have you considered a non MS browser which I know is not a fix?
I apologized as I must have missed answer to "Do you have any cleaner or other Utilities running ?"