Loop drop problem with silent parts and os235

I have some problems with the current os (V235) and my op1. After 3 crashes during one hour of recording stuff and loosing all my recordings (and reporting the bug to TE support) I discovered another one: I shift lift a track of a loop and drop it 4 times, but when I drop it the 4th time there is a short part of silence. I tried again. copied one of the 4 copies again which where playing fine and dropped it on the 4th loop and then the silent part was on another section. It was just short like a fraction of a second but clearly noticable.
Anyone else with this problem around?