Hi, I have an EWS account, that synchronized all EWS calendars globally. As for calendars I'm using Business Calendar 2. But as the EWS sync is done by Aquamail I guess this bug is about Aquamail:
Every item in the EWS calendars hiere is duplicated up to 42 times. That means for a calendar item today I have 42 entries.
That Aquamail was restored by TitaniumBackup with app and data from my last installation. Version is AquaMail 1.11.0-568, Pro Unlocker 1.0.23-341.