In Z3TA+2, when you select a "MIDI Arp nn" pattern, it loads a .cmp file.
 
If you drag the .cmp file instead from the windows folder onto the arp window, not only is the pattern not loaded, but all controls in the 2 upper thirds of the synth's UI disappear into black holes.  Clicking on one control brings it back and closing and reopening the synth brings them all back.
 
Does this happen with anyone else ?

Confirmed for the latest version. Dragging in Arp .MID files works fine, but dragging an Arp .CMP file from Explorer into the Arp causes ALL controls in the upper two-thirds (anything that's clickable) to disappear. Clicking within each control brings it back, but it's easy to miss some of the small ones. Having to close, then reopen, to get them back is a pain.
 
Edit: This should be moved into Problem Reports. You should get a CWBRN for it and update the Subject line.

Bump. I confirmed this bug.