Blue, not sure if you are speaking to me or OP or both, and don't mean to hijack's another thread. Pardon. FYI, I park in level garage, in gear with parking brake on from habit.
It has been a problem since I have had it, mostly when car is not warmed up or when it is cold (which is the whole time I have had my poor Sporty, very cold bad winter and still going).
I am consequently driving a little differently with this one, as I can't trust whether I can get it into second in a pinch (merging, etc). I have had to go back to first a few times and don't bother try going from first to third as their is no power and it wouldn't do for merging/pulling into highway traffic. It is just PITA when it hasn't warmed up mostly. But I have to be careful.
My Sporty is a little quirky but I love him, flaws and all. Would be nice if they find this something they can "fix" though.