Okay, so I've had a lot of problems with these recent updates, but ultimately nothing was broken so as to be unfixable. Here's a quick list of the problems I encountered (and what the problem/solution was):
(1) Manta went nuts/seemed bricked during a firmware update (firmware recovery process worked)
(2) Firmware recovery of Manta never said it was successful, even though it was (not sure if software bug or hardware issue---ultimately irrelevant at this point)
(3) Hub Manager not recognizing Hub scenes (solved by power cycling the Hub; still having some Hub Manager issues, but a Hub power cycle usually works)
(4) Manta and OFD not responding to Hub Manager and 3rd Party MIDI commands (solved once I understood the new MIDI options present within the Hub Manager and firmware)
I'm recounting all of that to provide context for the following: there are a lot of explanations for what I am about to say. I'm pretty sure I know what I'm doing, but there's a chance I'm wrong.
Having said that, my Manta does not seem to be saving presets to Footswitch #2. I engage Preset #2 with the footswitch, adjust knobs, and try to hold the footswitch to save it, and when I let go of the footswitch, it goes into bypass. When I engage it again, it has not been properly saved. When I go through the exact same process on my Bass OFD, it works. Any ideas what is going on here?