I am starting to suspect that something is wrong with my Y axis positioning, but it doesn't happen in all circumstances, just in some special cases like this one. I am also having problems with bottom layer not touching some of the walls, leaving gaps very noticeable with Concentric fill pattern and to a lesser extend with Lines filling pattern (on the image of the fork a gap in filling the top layer can be seen too). This also seems to be Y positioning related.
For some reason it all happens only with ABS filament. With PLA everything was just fine and I didn't have s