Can't accept invitation to meetings

[trourance]

Hi, I'm using the latest 3.9.0 version. I can't confirm my participation to meetings anymore without sending a reply. I'm forced to edit the answer before sending it, or it's not sent at all and the status keeps in temporary. But even when I do that, the meeting appears in the calendar, but the invitations stays in my email as if I had not answered.

[tjbwyk]

The same..

[jdkloe]

confirmed on my side as well.

[kstripp]

Seems to be the same behavior that I started getting this week after our IT did a "service update". (They of course didn't specify anything more detailed than that)

Might be duplicate of #542

[jdbarnesusc]

same problem here. what logs/files can we attach to this to help? it is the worst with multiple meeting requests.