Tried latest 32bit pspad551b790 and it behaves the same. In fact this is some bug when changing font. Any font change, even just opening font dialog, keeping same font and clicking OK enables cleartype again. But fortunately this is only temporary, exiting an relaunching pspad helps. This is Windows 11 with latest updates BTW.
Anyway, since this is only temporary it doesn't matter much, I don't change fonts so often :-) -- <https://forum.pspad.com/read.php?2,78542,78586> PSPad freeware editor https://www.pspad.com
