Toolbars remain VERY small in fresh and new install W10
Fresh, clean install of W10 and Firefox. Entire installation appeared small but W10 responded to changes in Display tools to normalize. Firefox did not. Though web content appears same as Windows 10 windows, the Firefox toolbar and menus are extremely small. Fix?
Chosen solution
You can set layout.css.devPixelsPerPx to 1.0 (default is -1) on the about:config page. Adjust its value in 0.1 or 0.05 steps (1.1 or 0.9) until icons or text looks right. Modifying layout.css.devPixelsPerPx affects user interface and web pages (global zoom). You can use an extension to correct the appearance of web pages.
You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.
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Chosen Solution
You can set layout.css.devPixelsPerPx to 1.0 (default is -1) on the about:config page. Adjust its value in 0.1 or 0.05 steps (1.1 or 0.9) until icons or text looks right. Modifying layout.css.devPixelsPerPx affects user interface and web pages (global zoom). You can use an extension to correct the appearance of web pages.
You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.
This was totally 'operator' error. With twin monitors only one had the display adjusted. NOT A FIREFOX ISSUE! Thanks!