LibreOffice calc doesn't save conditional format


When I have applied a conditional format in a range and I have oppened the file again, the conditional formats applied in different range of cells it already does’nt exist and I must always create them once again.
I am using LibreOffice x64 in Windows 11
Someone could please check it?

Thank you!

With pleasure. However, I would need advice on how to do this without the file.

Additional information about how the CF looked in the CF manager when it was defined as intended would be helpful. In this special case an image of the manager window should be inserted somewhere into the file,