I noticed on my system (Windows 10 and MM13.1) that when I create a text cell (ALT 7)
the longer my sentence is the more offset the cursor appears from where I am. When using the left arrow to go back the cursor just overlaps with a character!
So the first picture shows the position of the cursor. There is NO space between the last s and the cursor!

The same sentence but shorter..
I restarted my laptop, MM13.1 etc. [edit] I noticed that when I use non existing words this does not happen. It looks like the frontend is actively "repositioning" recognized English words. I disabled the toolbar to no avail.

"ScreenResolutionCompatibilityMode", but it seemingly doesn't help with this. The problem is not present in version 12.3.1. – Alexey Popkov Jul 01 '22 at 09:23