Thanks Mirela_Buru .
This looks like the section of the log file you are referring to, suggesting the bug still exists. The 'Connector previously experienced' date of 23 March is about the time we were setting up the hybrid (to allow Exchange mailbox calendars in MS Teams).
2020.08.23 09:12:45.650 10302 [Client=UX, Page=Mode, Thread=1]
=========================================
Mode
-----------------------------------------
Mode | Full Hybrid
HybridConnector.IsInstalled | False
NeedToUnInstall | False
=========================================
2020.08.23 09:12:45.665 10443 [Client=UX, Thread=1] Hybrid Connector Availablity: True, Reason: Connector previously experienced on 23/03/2020 18:37:02 +00:00
2020.08.23 09:12:45.681 10265 [Client=UX, Page=HybridConnectorChoice, Thread=1] START via Next
2020.08.23 09:12:47.853 10266 [Client=UX, Page=HybridConnectorChoice, Thread=1] FINISH Time=2171.9ms
2020.08.23 09:12:47.853 10302 [Client=UX, Page=HybridConnectorChoice, Thread=1]
===================================
HybridConnectorChoice
-----------------------------------
HybridConnectorSelected | False
HybridConnector.IsInstalled | False
NeedToUnInstall | False
===================================
KR,
Kevin