You shouldn't fear minor updates (when only the decimal part of a version number changes, for example: updating 103.0 to 103.1), only fear the major updates (for example: updating 103.1 to 104.0).Minor updates are mostly bug fixes.
layout.css.devPixelsPerPx affects the whole browser (on Windows and Linux) including images, all webpages and UI elements. It's kind of like "Make everything bigger" (or smaller) but only for Firefox itself.
I posted this in a separate thread as my issue was related to Linux, not Windows, and someone else merged it with this one.Before the update I had `layout.css.devPixelsPerPx` set to `1.3` from its default of `-1`.For me to get the same as I'm used to...
I made the rookie mistake of upgrading Firefox (version 103.0 on Debian) and now the font sizes for tab names, the address bar, the new tab page and other UI elements are way too big.
