[Plugin: All-in-One Event Calendar] Items from ICS show up on wrong date

After years of using the ICS Calendar plugin uneventfully, it started giving me problems and I began looking for a different calendar plugin, and decided to try out the All-in-One Calendar.

All-in-One Calendar looks very nice, and is fairly easy to administer. However, on my site, there are two main ICS files that I want to display in a calendar. I notice that when events from the ICS files are given an event category, All-in-One calendar moves the events up a day. If events aren’t given an event category, they’re fine, but it’s unacceptable that All-in-One calendar moves events to new days, just because they’ve been placed into a category. Since one of the ICS files has over 300 events and the other has over 600 events, I don’t fell like going through them and manually editing each event. In my opinion, All-in-One calendar is broken until they can get this fixed.

https://www.ads-software.com/extend/plugins/all-in-one-event-calendar/