When I used the Out of position on flop filter in the line check tab, it returned a hand where the target player was BB in a SB vs BB situation - meaning he was IN position on flop.
The same hand appears when using the In position on flop filter, so this is obviously a bug. Hopefully it will get fixed. Awaiting your reply.
P.S. Also it seems some PF hands where target player calls OOP are counted only in the "IN position" filter so this is pretty messed up. Good idea with the filters but atm they don't seem to be working correctly.