Libreoffice calc doesn't remember the last choice of paste unformatted text (ctrl>shift>V)

on my leap 15.6 libreoffice (vers 25.2.7.1) calc doesn’t remember the last choice of paste unformatted text (ctrl>shift>V)
I remember that in the past if I ctrl>shift>V and choose “separated by” the next time I found “separated by” already selected, now not, I always found “detected (space)” selected, how can I have the previous choice remembered?