I am on Kubuntu 20.10
I have downloaded LibreOffice from this site and installed it myself, so I have Version = 220.127.116.11
This is a behavior I have seen with previous versions as well.
The time has come that I ask.
I have a very simple text document. It is just text and maybe there are hundreds of lines.
Some words, I have colored, blue, some words I have made bold.
When I use the down arrow on my keyboard (or shift + down arrow), on certain lines, the caret suddenly stops.
There is an invisible force field.
Even if I use the keyboard right button, the caret is stopped by the force field.
With my mouse, it is not a problem. I can hold down LBUTTON and go down. I can select anything.
If I use my mouse to go below the force field. I can press the keyboard up arrow and no problem, there is no force field.
Once I am above the offending line, if I try to go down with keyboard down arrow, the force field stops the caret.
Certain lines in the document seem to have this one way force field.