Spell check does not work correctly in Calc

I have searched for an answer in this forum and cannot find any suitable solution. In Calc I have a spreadsheet with a text column. When I click on a cell in the text column and then click on Tools > Spelling it correctly shows the misspelled words in red. The correct suggestion is highlighted. I click on the Correct button and the spelling gets corrected in this spelling window. The spelling window then disappears but the misspelled word is still in the text cell.

Question: Why is the misspelled word not corrected in the text column?

Works here. Which LibreOffice version and OS anyway?