Description:
The Mark invalid data function (Tools > Detective > Mark invalid data) can be used to mark invalid data in a validated cell with a red ellipse. This function also exists in Microsoft Excel, but Excel turns this function off automatically when saving the spreadsheet as XLSX. Calc on the other hand saves it as a regular, non-functioning ellipse shape in XLSX. It would probably make more sense to drop it entirely when saving the spreadsheet as XLSX, similarly how Excel turns this function off when saving.

Steps to Reproduce:
    1. Create a new spreadsheet.
    2. Fill the A1:A3 cells with the following numbers: 1, 5, 15 and the B1:B3 cells with the following numbers: 12, 8, 16.
    3. Select the A1:B3 cells and click on Data > Validity.
    4. In the “Validity” window set the following criteria: “Allow: Whole numbers”, “Data: less than”, “Maximum: 10” and click on OK.
    5. Turn on the “Mark invalid data” function by clicking on Tools > Detective > Mark invalid data – the A3, B1 and B3 cells should have red ellipses around them.
    6. Save the file as XLSX and reload it by clicking on File > Reload.

Actual Results:
The ellipse around the B3 cell is converted to a regular, non-functioning ellipse shape in XLSX, while the ellipses that were around the A3 and B1 cells are lost – presumably because parts of those shapes were outside the sheets boundary. If the same XLSX is opened in Microsoft Excel 2013 all three red ellipses are visible.

Expected Results:
Ellipses shouldn't be exported when saving the spreadsheet as XLSX.


Reproducible: Always


User Profile Reset: No



Additional Info:
LibreOffice details:
Version: 6.3.0.0.alpha1+ (x64)
Build ID: c3245cfd54f391111afb424867ab483096d9de5e
CPU threads: 4; OS: Windows 6.3; UI render: GL; VCL: win; 
TinderBox: Win-x86_64@42, Branch:master, Time: 2019-05-19_22:59:06
Locale: hu-HU (hu_HU); UI-Language: en-US
Calc: threaded

Already happens in: 
LibreOffice 3.5.0rc3 
Build ID: 7e68ba2-a744ebf-1f241b7-c506db1-7d53735