[KevinH]

PatNY,
Make sure you do not have two-copies of qt_styles.qss anyplace. If you do perhaps you are editing the second copy?

If not, then try editing the launch command to completely remove the whole -stylesheet command line option and see if that helps.

Alternatively, try creating a bat file to launch it but rename qt_styles.qss to something new first (and update the -stylesheet option to point to the new .qss file after changing the 22pt to something you like).

Nothing should be cached unless it is Windows itself doing the caching.

Edit: you must exit completely from Sigil and relaunch for any changes to qt_stylesheet.qss to have any impact.

KevinH