Hi Daniel,
This feature never works for me...
I click on either Rotate button (CW or CCW), but the image in the preview never rotates.
The cropping tool is off.
What am I doing wrong?
Two possibilities I can think of:
You have the Print orientation locked, see attached screen shot below.
Or, going from your screen shot which shows and almost square image, it will not fit on the page when rotated.
I also note you are using an older version of QU, pre v2018. I recommend you update as the new version has many improvements, especially with regard to the UI.
Terry