cell change comment

Something happened to my spreadsheet recently which causes any modified cell to have a red or blue border around it, and display most recent change info when the mouse hovers above a cell.

Does anyone know how to get rid of this?

I’m running Ubuntu 18-04 and LibreOffice 6.0.4.2

Disable change tracking in menu EditTrack Changes. Do not hide it, because doing so would only disable display of the changes, not their recording, which might be a security issue, when you send your spreadsheet to someone, and some information would be in the document which isn’t supposed to be available there.

Thank you for a very speedy reply. My problem has been fixed, and I have learned a new useful feature of calc.