This seems to be in Libre Office itself. It started when I was trying to do a sort but kept getting the points wrong on the sort and after about 4 trys, the spreadsheet maxed out to cell AMJ3273, with mostly 99% empty cells. I closed all my work. Rebooted. But still when I load a spreadsheet, even one I didn’t previously had open, is the same it goes to AMJ3273 with no way to get to A1. Which is why I think it’s some setting in Libre Office.
I can see my spreadsheet if I search for the letter “a”, but immediately it moves the cursor to the far right of the spreadsheet. Which is how it loads from scratch. How to get rid of these thousands upon thousands of empty cells, so I can see and work on my spreadsheets once again.
I think this might not even be LibreOffice related. I get the same kind of thing happening in Windows 10 File Explorer
rgds
stu