Randomly deleting my typed comments in notes

Zotero error reference number: 1288311275

While typing in the notes section of an item in Zotero, the software deletes a phrase that I just wrote and sends my cursor to the top of the note (unexpectedly and seemingly not connected to any routine keystroke). This deletes phrase or phrases that I just typed and sends my cursor to the top of the note where I do not with to insert comments.
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