Bug affecting the comments on beta

I’m having some problems with the comments: the selected text they were supposed to be referring to spreads to adjacent paragraphs. When the comment is removed, the text it was referring to in the first place stays highlighted, but the comment disappears. If I change fonts, the comment reappears, selecting only the original text.

The text it should be referring to is the right cell. Other times, it has spread to the upper cell instead of to the left cell.