This issue is tracked here:
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
left overnight, then started navigating left pane on windows and then it hung, nothing in logfile other than below which is normal looking
. 2020-02-27 07:03:47.925 Looking for network events
. 2020-02-27 07:03:47.925 Timeout waiting for network events