Calendar events get canceled in a foreign language without user interference

Work_assistant_profile (ADM) 1 Reputation point

Dear other Admins,

if you'd have the time, I'd appreciate your thoughts on the following matter, which I have not been able to figure out.

Please have a lookt at the attachment. In a shared calendar there has been noticed 2 times a long standing (not recurrent) calendar item has been canceled.
Nobody actively did that. Normally I'd be suspicious, but in this case it could be another cause. Because the language is not the same as manually cancelled events.
It is in English. Also, it is in white, which normally nothing is.

Any idea where this could come from would be highly appreciated, as it would narrow my search.

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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