Positional: collision flip fit

If I understand it right if collision set to "flip fit" it will first try to flip if psossible and then will fit if not. Correct?

The problem that I've notice that to implement this strategy correctly one need to specify "flip fit" if positional at "top" or "bottom", and "fit flip" (visa versa) if at "right" or "left". It seems to me strange.

Start by reproducing the reported "flip fit" behavior for top, bottom, right, and left positions, then trace the positioning and collision-handling entry points. Done means the documented strategy consistently tries flipping first and fitting second without requiring direction-specific option ordering.

Written by the indexing model from the issue text.