Iirc, there was an issue with that which is solved meanwhile.
There should be an option in Current Drawing Preferences in Dimensions tab.
It is called Linear zeros in current version, I think its name is the same or similar in 2.1.0.
When there remove right is checked, zeros behind the point should be removed.
The issue was, that all zeros on the right were removed, what is wrong of course.
So you can try to uncheck this or update to a newer version, e.g. 2.1.3 or latest nightly build.
investing less than half an hour into Search function can save hours or days of waiting for a solution
In the 2.2.0 version it's by purpose to show text simplified as boxes when very small in relation to the screen, and so hardly can be read anyway, to speed up screen rendering. When you zoom in the text should appear. You seem to have a high resolution screen, maybe there is a problem with this.
You are a god........ just spent hours on my first LibreCAD project and all of a sudden half of the dimensions changed from x00mm to just x. Wasnt even aware of your solution and certainly didn't change but when I checkecked yourr suggestion the box was ticked...no idea how or why but untickked it and all is right with the world again..........Many Thanks