Bug UMMU Bug

[Stargazer14]

After i landed on mars, i proceeded to execute EVA 1, and as i stepped out on the surface, i turned in a full circle to see where my UGCO payloads had landed, then as i took my first step forward my UMMU shot up into space again, the following keys make my UMMU go upwards:

Pg. up
Pg. Down
8
2
Up arrow
Down Arrow

Help!