FabFilter User Forum
Bug: Pro-C 3 blocks Waves plugins Interface
Seems like disabling "Allow retina drawing of user interfaces" in Reaper fixes that issue. Not looking good though as Reaper is even uglier than ever now (yes it's possible) :-)
Brett Caldas-Lima — Jan 18, 2026
Does this only happen with Pro-C 3 or also with our other plug-ins?
Cheers,
Frederik (FabFilter) — Jan 20, 2026
Sorry Frederik I didn't see you answered my message.
It was only with Pro-C 3. But, this is very random. When I reported it, the issue was there 100% of the time. Now I'm trying to replicate it and can't. It seems to work fine for some reason. I suspect something between Reaper and Tahoe, because I have a lot of other plugins now lagging like crazy or having trouble showing up altogether, so probably nothing to do with FabFilter.
Brett Caldas-Lima — Jan 27, 2026
Hello all, I'm encountering a very weird (and annoying) bug in Reaper (latest version). Don't know if it's on Waves or on FabFilter side.
When I have a Pro-C3 plugin in my session, none of my Waves plugins can display their interfaces anymore, they're all grayed out. As soon as I bypass C3, Waves plugins are fine again. Everything in my system is up-to-date.