Area Selector can't pick items that are flipped

[birbilis]

Version: 0.5.12

Flipping is done on the top-left corder of items internally which seems to cause issues to area selector and also when clicking to pick an object. Probably it is related to non-normalized bounds rectangle or to the bounds rectangle not getting affected by the flipping (in which case one needs absolutebounds most probably, maybe normalized too so that left<right, top<bottom)

[birbilis]

should check if flipping also affects items that are unanchored in non-Edit mode (if one can drag to move them)