Hi,
there seems to be some problems if lines are starting with a [ at the beginng. For example, if I write (without the “) “[TAG]Text[/TAG] further text.” in text editor nothing appears.
When writing ” [TAG]Text[/TAG] further text.” (a SPACE at the beginning) everything appears.
In visual editor, both times nothing happens.
I found out using the WP Glossary plugin, which uses [glossary][/glossary] for tagging terms.
If I write “[glossary]TERM[/glossary] further text.” only “TERM” appears. If I write
” [glossary]TERM[/glossary] further text.” (with a SPACE at the beginning of line) “TERM further text.” appears. This happens both in text and in visual editor.
There seems to be no problem, if [-tags appear on some position in text, only when they are at the beginning of line, there are problems.

P.S.: I’m using Novella theme.