FLStudio 20, reinstalled and it fixed most of them. But a few of the factory VSTs open in a really large window for some reason? Im not able to resize them either. Happens with a few of them like ...
FLStudio 11.1
When i open the 32bit Version it finds Plugins like for example "fruity soundfont player" and "wasp".
When i open the 64bit Version it does not find/open these Plugins (and a few more ...