Bug report: Fill in multiple blanks [] is not compatible with latex

[u4564845]

In LaTex, you may need to use [] from time to time.  For example, for n root the value n must be in [n].

This is incompatible with "fill in multiple blanks" question type for quiz.  Additional answer spot from [n] will show up in your question but students may not answer them.

Please let me know a better idea than changing n root to power of 1/n.  Ideally this bug should be fixed asap. If you have the same issue and can report it via your channel, please do so.