[Evolution] invitation from outside is duplicated after having been changed and resent

[mh mike franken de (Michael Hirmke)]

Hi,

I have the problem, that some invitations are duplicated, when they
were modified and resent from Outlook clients outside or inside my
Exchange organisation.
The original invitation can be modified and/or deleted. The new one
can't be deleted using the GUI and it can't be edited (of course), cause
I'm not the organizer.
Unfortunately I can't test it with other clients than Outlook, cause I
only have one Evo client at home and a bunch of Outlook clients at home
and also at work.
Version is evolution-3.24.4-1.1.x86_64 on openSuSE Tumbleweed (latest
snapshot).

What debug information do you need for this problem?

Thx and bye.
Michael.
-- 
Michael Hirmke