Description: "Protect Spreadsheet structure" input does not persist past the current session. Steps to Reproduce: 0. Create a new worksheet. 1. Top options menu -> Tools 2. Click on "Protect Spreadsheet structure" 3. Supply an input. A "blank" password is a valid trigger. 4. Save as ".xlsx" and then exit. 6. Re-open and repeat step 1 to see that "Protect Spreadsheet structure" has not been saved. Actual Results: "Protect Spreadsheet structure" input does not persist past the current session. Expected Results: "Protect Spreadsheet structure" input persists past the current session. Reproducible: Always User Profile Reset: No Additional Info: Version: 7.5.4.2 (X86_64) / LibreOffice Community Build ID: 36ccfdc35048b057fd9854c757a8b67ec53977b6 CPU threads: 16; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-NZ (en_NZ); UI: en-US Calc: CL threaded