I will as soon as it occurs again - it's not consistent in when it happens.
So having the server hang (potentially indefinitely if I turn watchdog off) when someone logs in isn't a bug?
I can't really agree that this is a dupe of MC-63590 as this occurs when a user logs in and is just being masked by the watchdog; the watchdog isn't the cause of the issue.
I will as soon as it occurs again - it's not consistent in when it happens.