I am so frustrated with X2 right now. I believe I have seen this in X1 also.
When trying to change the clip properties start time, I grab it from a take lane - hilite clip, copy start time from clip properties, drag clip to new lane, edit start time by pasting value - nothing gets visibly pasted even though the option is tere to paste. When hitting enter, it goes to 1:1:00
I expect that the value would stick from the paste, but nothing gets pasted.