I haven’t reproduced it yet but…
Installed 0.9.33 on an iMac OSX 10.10.5.
Launched editor with no connection to a Sub 37.
Played with the window size a little, moved some sliders.
Opened the bottom half of the editor. Moved some knobs and sliders.
All of the pulldown parameters in the bottom half of the EDITOR page were unresponsive, but all of the knobs, sliders, and buttons in both the top and bottom half still worked fine.
Closed app, relaunched, and everything works fine, so far.
Could be a first time launch thing, but it’s worth mentioning.