Lock structure with Apache POI - xlsx files

I want to create a XLSX file using Apache POI with structure protection, like this:

XSSFWorkbook wb = new XSSFWorkbook();
wb.lockStructure();
wb.setWorkbookPassword(PASSWORD, null);

When I open the file generated in Excel, I check that it is correctly protected. However, when opening it in LibreOffice, the file is not protected, allowing editing of the structure.

Is it a bug in POI or in LibreOffice? Or I’m missing something?

maybe tdf#122922
then Dependency tree for Bug 143335
etc …