Spreadsheet cursor key gets stuck when a fixture type is collapsed in an editor

Just a minor interface glitch, but if you put the cursor of an editor spreadsheet in a field of the last fixture type and then collapsed it, then the cursor stays in the empty area left by the spreadsheet and is not movable via cursor keys anymore. I would have expected, that the cursor jumps up to the last line of the second last fixture type and then is regularly usable.
To get the cursor working again you can just click into another cell via touchscreen/mouse and voila, the cursor keys move the cursor again, as they should.

Road Hog 4
Hog OS 3.12