Hey, @unfa, haven't searched much about this, but what have you done now that some LV2 plugins don't show their custom GUI?
I found this affecting some packages of Arch: https://bbs.archlinux.org/viewtopic.php?id=310058
@porru Maybe this link could be helpful: https://github.com/falkTX/lv2-gtk-ui-bridge
I'm using it in Ardour for older projects that use Calf plugins.
@porru this is nothing new. I have largely stopped using EQ10Q and Calf plugins a long time ago because they were linked against libraries that they shouldn't be using as plugins. It's a problem with specific plugin sets and just it's the way that the guis were developed. Most plugins don't have these issues. Another problematic set are the "V1 suite" from the creator of Qtractor. samplv1, drumkv1 etc. They are linked against Qt libs and a version mismatch with host will break the UIs.LSP works.