In the course of trying to give a quiz, I've come across a few bugs in the last few days that I just wanted to highlight.
Adding a Text Box in BSL results in being unable to run the file.
Code in a Text Box is unreadable if the user has picked a theme with a black background.
Search/replace doesn't work inside comment boxes. (Just checked, and it doesn't work at all in Text Boxes, but that's not as big a deal.)