If you just want the fix, skip to the bottom :)

Situation

So I had some time to look at the post-seasons-patch code and honestly, I don't see how these cheats are "bugged", it was a very intentional change to which tiers of cheats are enabled.

You have 4 classifications of cheats:

Live
Cheat
Automation
Debug

Pre-seasons, Cheat and Automation were considered the same, and if you turned on testingcheats both types of cheats were enabled. Automation cheats were not meant for the public and many of those are the ones I released. Personally I think the amount of cheats would have been severely lacking had Automation cheats not been enabled by accident.

Post-seasons, Automation cheats are now blocked unless the game is truly in an automation mode (something devs have access to for testing)

I don't believe that this was accidental as post-cats-and-dogs patch, the reason the "toggle_selectable_pets" cheat didn't work was because they had classified it as a new type "ReallyAutomation". This prevented it from being enabled with the rest of the cheat/automation type cheats.

As of seasons, the "ReallyAutomation" type is gone, and the toggle_selectable_pets cheat was changed to Automation. This implies they knew Automation cheats would now be blocked. The change equates to one line of code and is so straight forward I don't see how it could be a "bug".

I'm really hoping the guru's reconsider and re-enable all of the automation cheats. They're essential for many of the play styles simmers have out there.

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The Fix

As it turns out, my AllCheats mod fixes any of the "broken" cheats (automation type cheats). This is because my mod changes all cheats to be considered "Live" type cheats, which are always usable.

You can download a copy of my mod below :) Enjoy guys.

How to install:

1. Download the ts4script file directly to your Documents > Electronic Arts > The Sims 4 > Mods folder.
   (right-click save as if you're having troubling saving it)
   
2. If you haven't already, go into your Sims game:
   Options > Game Options > Other, and check both the "Enable Mods" and " Enable Script Mods" options, then restart your game.

That's it! Simply start up the game and your old cheats (+more) will be available again.

edit: Updated mod link for November patch.