How can I make my "Reset [Custom Workspace]" keyboard shortcut stick?

First of all, for Adobe Forums site producer/devs: when typing my question in this textbox, the text is white. At first I thought it wasn’t accepting keyboard input at all, until I selected it. Since I can’t see what I’m writing, I had to draft this in a separate note and paste.

Then I discovered that pressing "Post", rather than actually posting my pasted question, took me to a new page that looks exactly like the last "Start a discussion" page, only with a fully-functioning text box with all the bells and whistles.

This was a wild ride. I have screenshots. Using Firefox Nightly, MacOS Mojave.

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The real question: I use Photoshop on my work computer: Mac laptop with external monitor. The laptop screen is shut most of the time. When I wake the Mac from sleep or switch from large monitor to laptop (for meetings) and back again, my Photoshop workspace rearranges itself.

I’ve created a custom workspace that fits my monitor, but I have to go into the menu and reset it every time, multiple times a day. This gets tedious. So, I tried to create a keyboard shortcut to reset my workspace quickly.

Unfortunately, the keyboard shortcut doesn’t stick. Every time my workspace gets screwed up, the keyboard shortcut to reset it disappears as well, whether or not it’s saved to the workspace. Disappears as in, it no longer works and has vanished from the Keyboard Shortcuts menu, despite having been saved.

It seems like Photoshop reverts to defaults every time I change from monitor to laptop or wake from sleep, so if PS is not using my workspace, it’s probably not able to access the shortcut either. And we’re not allowed to change Photoshop’s default kb shortcuts…

So how can I make my keyboard shortcut, to quickly reset my custom workspace, stick? A script?

(Better yet, it’d be nice if my WS didn’t get shuffled around at all, but barring that possibility I’d at least like to get this working.)