Hello,
it seems REAPER does not cope properly with GUI reduction, at least with newer Klanghelm plugins that have scalable GUI.
Here is an excerpt of the KVR thread where I originally reported it, the Klanghelm dev replied:
https://www.kvraudio.com/forum/viewt...10153#p6810153
Just dragging the REAPER plugin window edge restores the plugin window to correct size.
Tested on Windows 10 (Anniversary update) and REAPER x86 5.50rc2, VST2 version of Klanghelm VUMT Deluxe and SDRR2.
Thanks,
Mario