After many tests i have come to the conclusion that it has something to do with UI scaling.
When i turn auto Scale off then UI stays the same(in terms of fat outlines, font size, unitframes out of line) after window swapping... BUT then again small windows have their UI elements overlaping each other( since they dont autoscale) so its impossible to mouseover heal... broadcast mousecliks e.t.c

What a headache and the month time is coming to an end O,.o