Another hub lockup

With the hub update 2.1.0, I decided to re-do all of my Rule Machine automations, but before that happened, my hub locked up last Friday - the first time ever for me.

With no clear changes that might have led to this, I removed a few apps that I was testing out, and even though I have very very little in the way of "fancy" apps loaded anymore, I experienced another complete lock up yesterday.

In both cases, by the time I realized the hub was locked up, a bunch of my ZigBee devices had dropped their connection, so I have to assume the hub's ZigBee network also stopped working altogether.

Before contacting support, I was hoping to try performing a "soft" Hub Reset as explained by @raidflex here:

...however I got a page with a single text entry field asking for a "Login", and my Hubitat username / password are not accepted.

So, I am going to disable the only couple of things that could be suspect and see if the hub locks up again.

Perhaps there's something I'm missing, but I've only experienced slowness in past which I resolved by removing the "offending" apps, and I have never had the hub lock up before the most recent update.