Tag field no longer works

I know at least part of what is going on. The Tags/Comments/Actions panel at the bottom is added by the utility Default Folder, one of the greatest productivity utilities ever made for the Mac. I’ve been using it for maybe 30 years. Those are Finder tags being applied through Default Folder, not any code in Photoshop. To prove this, quit Default Folder and you will find that all of the extra buttons and fields around the Save As dialog box will disappear. Start Default Folder again, and all of the extra options will return the next time you open am Open/Save As dialog box.

But I am also going to say that adding a copyright with the Tags field is not a good workflow, and is probably not in your best interests. Here’s why.

That field adds Finder Tags. Those can help label documents in the macOS Finder, and those are synced through iCloud Drive so you can see the same labels on iOS and iPad OS. I also use Finder Tags, for the things they are good at.

The first point is that the location shown in your screen shot (Default Folder’s Tags field) is not the correct place to edit them. You edit Finder tags in the macOS Finder, by choosing Finder > Settings and then clicking the Tags tab. In other words, Photoshop does not manage the macOS feature you are showing.

The bigger problem here is that what is being entered here is a copyright notice. If the intention is to embed a copyright notice that will be seen by others especially when sharing online, the Tags field is absolutely the wrong place to do it. That’s because Finder tags are Apple-only. They are not supported on other platforms, and also, they cannot be preserved when, for example, uploading to a website or social media.

The correct place to add a copyright notice is in industry standard, cross-platform, IPTC photo metadata. To do this in Photoshop, you choose File > File Info, and type into the Copyright Notice field. But it is often much faster and more efficient to apply a copyright notice in the Metadata panel in Adobe Bridge or Lightroom/Lightroom Classic, especially if you want to select multiple images and add copyright metadata to all of them in one click. Those add the copyright notice as standard IPTC metadata, which is preserved and respected across platforms and applications.

Note that Apple Finder Tags are so weird and proprietary that they are in no way related to standard IPTC photo metadata, and also, there are not many tools around that can convert between Finder tags and standard IPTC metadata (I don’t think any Adobe applications can). So if the goal is to enter standard photo metadata, it’s really important to enter it in the right place the first time.