Strange behavior with "save button" while working with BO

Hello everybody,

sometimes we have some strange behavior with the save button of Excel, when we want to save a workbook local on the computer (not on the BO server).

When somebody of our users works with an local BO Workbook and want to save the changes localy by pressing the excel "save button" (disk)

sometimes the changes aren't be saved.

--> After reopening of the Workbook it is like before.

However, that does not always happen.

Does anyone of you know this problem?

We are using Ofiice 365 and tested it with BO 1.4.11, 2.0.4 and also 2.1.3 .... not tested with BO 2.2

Thank you for your answers.

Best regards.

Steffen