Why manual editing of pitch in Drum Editor does give wrong result?

I want to move hit that is at D2 to F4 but my note instead becomes C#-2. Why is it happening?
I guess this was of C8.5, how to fix this? Very annoying.
I use Drum Map for Addictive drums? Is it drum map related?


How do you move it? Maybe a video screen record would help here.

It used to work in Cubase 5


Thank you, reported to Steinberg CAN-25881.