Which plugins are showing this (very) strange erratic UI behavior?
LADSPA plugins don't have a GUI so they are always presented with the generic UI (plugin > Properties...).
No plugin can be LADSPA and LV2 at the same time and instance: it is either LV2 or LADSPA, never both.
Please care to investigate further and detail exactly which plugin(s), where did you installed them from, whether there are duplicates whatever and else you may find relevant to the issue, etc.
And no, I've never saw anything behaving like you've just said.
Cheers
Which plugins are showing this (very) strange erratic UI behavior?
LADSPA plugins don't have a GUI so they are always presented with the generic UI (plugin > Properties...).
No plugin can be LADSPA and LV2 at the same time and instance: it is either LV2 or LADSPA, never both.
Please care to investigate further and detail exactly which plugin(s), where did you installed them from, whether there are duplicates whatever and else you may find relevant to the issue, etc.
And no, I've never saw anything behaving like you've just said.
Cheers