Replacing first char in each line with a space when I leave the paragraph?

I just installed 6.2 and hit a big problem.

Using Writer:
After typing a paragraph, when I hit ENTER, the paragraph re-flowed and a bunch of words were mis-typed, missing letters. Upon careful inspection, I found that there was also a double space at this point. The first letter on a line was being replaced with a space!

On the second paragraph, it did the same thing so I know it wasn’t something else I did by accident. But pressing ctrl-Z once undid the damage and left the cursor on the fresh line below.

If this is something about the paragraph style I’m using, I’d like to get it into the hands of someone who could look into that. But I’m hoping there’s a simple fix, perhaps an incompatible option?

Try Menu/Help/Restart in Safe Mode