Zaphod Beeblebrox: We tracked this down to LibreOffice erroneously being called from the file manager with a "bad" pathname for accessing the file on the SMB share. That is, the issue cannot be solved on the LibreOffice side and is now assigned to the gvfs component.
A workaround might be to open the document from within LibreOffice via "File - Open...", maybe after first setting "Tools - Options... - LibreOffice - General - Open/Save dialogs - Use LibreOffice dialogs".
Zaphod Beeblebrox: We tracked this down to LibreOffice erroneously being called from the file manager with a "bad" pathname for accessing the file on the SMB share. That is, the issue cannot be solved on the LibreOffice side and is now assigned to the gvfs component.
A workaround might be to open the document from within LibreOffice via "File - Open...", maybe after first setting "Tools - Options... - LibreOffice - General - Open/Save dialogs - Use LibreOffice dialogs".