I am able to enter a negative value for the current frame in the AW numerical field. This should not be possible.

repro:
-create a cube
-create a clip
-enter "-10" in the current frame numerical field of the AW
...current frame is now -10 (bug)
expected behaviour: original value should be returned as the current frame.

note: using the key button or hotkey will create a key at the current negative time, which is bad.