Check your graphics driver and hardware acceleration preferences as well as your settings for PS' memory tiles.
"After rotation but before pressing Enter or clicking tick button:"
But it stays like that after I hit the enter :/ It does not corrects after the enter button. I told you I never had this problem before and I'm really confused .
I just fixed it.
Really not sure why this happened, but at one place I saw an answer: "change the Interpolation" (after you click on the free transform) .
And so I did and it just got fixed.
The more interesting part is that I tried on all Interpolation - options and this problem didn't showed again? I don't know, maybe some bug.
Check: I cut different parts again rotated them and such , and no more problem? Strange.
You might want to check the default image interpolation setting in Preferences > General . You may find that changing in the options bar has overcome an issue with the default.
Glad you have it sorted though