There is a warning dialog popping up every time I want to paste copied content into a worksheet of a document. It does not matter if the content was copied from within the document or from another application. The warning dialog looks like this:
After this, the only option is to reload the document to be able to carry on.
The funny thing is it only happens in one particular worksheet of a spreadsheet. I can successfully copy / paste in other worksheets or spreadsheets.
Is there something I did to mess up this functionality ?
OS: Windows 10
Browser version: Firefox 91.0.2