I don’t know if this’ll help you, Zeeshan …but I was having this issue as well. Then I noticed NVIDIA Overlay had ALT+R as the shortcut to “Toggle Statistics” up in the corner of my screen. This was blocking me from clearing Rotation in Blender.
I switched it to Shift+Control+Alt+R in the NVIDIA Overlay Prefs and that freed Blender right back up. I was missing it as the Statistics info was difficult to see when I wasn’t in a game…barely noticed it in Blender.
Not sure if you’ve got an NVIDIA card, but see if that works for you!
