Please note that Thunderbird is not an iCalendar validator. However, I don’t see any problem with this iCalendar event here, it looks like this on my Android 8.1 emulator (25 Nov 2016 10:30 +00 = 25 Nov 2016 11:30 CET, which is used in the calendar view):
Also, which past time event limit have you set in the account? This information is also contained in the debug info, so please provide the debug info as described in [READ BEFORE POSTING] What’s required to diagnose a problem.