It was happening to us last week also and I almost opened a ticket, but it seems to be fixed for us now. If it's still happening, keep adding to your ticket!

Not totally understanding your setup, I ran a couple quick tests. I think the custom form that's added to a task to capture your deploy date, only adds that custom information to that specific task. If you add that same custom form to the next task, it doesn't seem to be connected - I can choose two...

Certainly is for me. It's super fustrating, but I now use a password manager, so its shortcuts make if fast to log back in. It's still extremely annoying.

Ours branding was still intact until one day last week when I noticed our branding was replaced with Adobe's. We were migrated back in February, so it took a while before it happened. 

I've used this method before - Documentation > Workfront Workfront Guide > View: hide the content of a column 

I thought that was you, @Doug_Den_Hoed__AtAppStore 

Personally, I did do that until they fixed my Experience League profiles. Got a chance to get used to Edge

We have the same situation, our Adobe Creative Cloud apps are not SSO, but Workfront is SSO-enabled. We now have two Adobe Admin Consoles and the migration was okay. It's not a great experience for my users that have both Adobe Workfront and Adobe CC accounts (at least for us - your situation could ...

There is a Corporate Event Plan blueprint you can check out. More information here Blueprints Overview and List of available blueprints 

Sure, check out this thread Proof Report ?