Description:
After normally opening a password-protected .xls file, I cannot remove the protection by "Save as" and having the "Save with password" checkbox unticked. When I open the file it is still password-protected.

Steps to Reproduce:
1. Open a password-protected .xls file (or .ods -- tried that as well)
2. "Save as" a new .xls or .ods file. The "Save with password" checkbox must be unchecked.
3. Open the new file

Actual Results:
The .xls/.ods file is still password-protected, libreoffice calc still prompts for a password.

Expected Results:
The .xls/.ods file should have been opened without asking for a password.


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Behaviour happens with Libreoffice 7.0.0 in Debian testing. Previous version 6.4.5 was OK.
When clicking "Save as", the "Save with password" checkbox initially appears unchecked. Checking and unchecking has no effect, same behaviour.
Tried "Save as" a different file format (.xlsx/.xls/.odt), no difference, new file is still password-protected.
Checking the "Save with password" checkbox and specifying a different password works OK, the new file can be opened with the updated password.
Although my problem was with Excel-created .xls files, I also tried with .ods files created by LibreOffice. If they are saved with a password, then it becomes impossible to remove that password.

Not sure whether this is related to bugs #134332 and #134796, as in my case the file opens and saves normally, I just cannot remove the password.