CSV import was changed from 7.3 to contain "Evaluate Formulas". That's not in Help page https://help.libreoffice.org/7.5/en-US/text/shared/00/00000208.html. Also, there is "Skip empty cells" which is no more in options. Another page to update with "Evaluate Formulas" option is https://help.libreoffice.org/7.5/en-US/text/scalc/guide/csv_formula.html
Should be noted that "Skip empty cells" availability depends on the import content.
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/5a91be35bf16757602aa1600a0c154bd5560b2bf tdf#149846 tdf#149759 Update CSV import Help page