Small file, no formulas, only text. Simple spreadsheet saved fine several times, but had filled column background and column was selected when I hit save. LO hung up and was force quit. Can send detailed Apple report if requested.
Would it be possible you attach a simple file to reproduce this easily? (Have in mind that any attachment is automatically made public, so remove any confidential/private part from it). BTW, I put it as MacOs since you spoke about Apple.