Weird problem at one side of the screen

My Surface is sick, some symptoms listed below . . .

- I seem unable to close a tab in Edge by clicking on the X
- Clicking the X when opening File Explorer window results in no action whatsoever.
- Swiping down from the top to close a full screen program does not work.
- Swiping from left to right seems to work ok

I did find out that when I switch off rotation lock and turn tablet to portrait or upside-down landscape I can close tabs without any problems.

My system consists of: Surface Go Intel Pentium 4415Y 1.6GhZ with 4GB RAM and run Win 10 in S mode version 1903 build 18362.10024 in the English language. 64GB storage , Win 10 in S mode , Edge , Office 365 , No physical keyboard , No mouse.​.


Any suggestions ?

1. b
2. u
3. m
4. p

Thanks Pejole, you where right !

Used a graphics program set to full screen and then started drawing with my finger. Seems to be a screen issue indeed. In certain areas I was unable to draw.