unusually bent rubber seals?

Me again, just had sliding patio doors fitted and seals do not look right to me.. but then am in no way an expert... should they not be shoved into the frame and tight at the corners?
I've found, while cleaning, that I can push the outer edge (away from the glass) into the frame and it looks better, but biggest concern is that the strips seems to be continuous - should they not be each length of the side of the window they're against? I thought they would be cut at an angle so that they butted tight to the corners. Am I being too picky?
The installer is due back this week as they seemed to think I would be happy to slide the door open using the key in the lock and I've re-requested a handle....
Suggestions/solutions as soon as possible would be hugely appreciated! Thanks.