Cell data disappearing Version:

This is the Build ID: that comes with Fedora. I am seeing cell A1 randomly disappear when I reopen a large spreadsheet. This started occurring when I upgraded from Fedora 26 - libreoffice- (I think). I share this spreadsheet with another computer and open it in 5.3-something there and don’t see this happening.

Anyone else seeing this kind of random thing?

Can it be a visualization issue?, going to the cell is their content showed on the Formula Bar?