I’d suggest to check if it works in other software first - last time someone thought that kerning didn’t work, it turned out that the tool they were using didn’t support kerning in TrueType fonts.
Okay, I will be sure too! Thanks!
Okay that's exactly the issue XD. Apparently both my version of godot (fixed in a later version) and paint.net don't support kerning pairs!
Thanks for taking time to help me, and sorry for bothering you!