Extra frame when stretched (v.25.1 Build 73)

Hi,

If I cut the master along the splice points and stretch (optical flow) the cut-out sequence, then at the beginning of the stretched sequence I get 1 frame from the previous sequence. I suppose nothing should be added from neighboring sequences to the one that was cut along the splices.

My system:

HP Z8 Windows 10Pro, GPU Nvidia RTX 3090Ti (Studio driver 566.36)