Hello, I saw two other bug reports about this red dot control character but they don’t look like mine.
Remove a selected line break by pressing space in live preview:
The two lines are merged into one.
The lines are merged but every bolding “*” character in the original second line becomes a red dot named “control character zero width space” .
It only happens when I press space directly to remove the line, so it’s not a big problem because I can press delete and then press space and it works fine.