Using calc Version: 6.0.7.3 (x64) protected xlsx file app locks up

Calc version 6.0.7.3 and previous versions, locks up while editing password protected .xlsx file… Occupies when I’m scrolling through looking for specific cell, or have just updated a cell, or when trying to add a line. Luckily the recovery option works or I would have lost the file. File is small with 520 rows and A-G columns of alphanumeric data. No macros.

See also Calc, password protected file is much slower than non protected file