Bring back proxy icons to Photoshop/Indesign?

If you like tabbed (or floating) windows, then a script can open the enclosing/containing folder of the active document on Mac or Win via a keyboard shortcut.

/*
Open Document Parent Folder.jsx
https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-to-reveal-file-in-finder/td-p/13181462
/////
A related Photoshop script to open and select the file in Adobe Bridge:
https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-do-i-start-adobe-bridge-in-photoshop/td-p/12782971/page/2#U12825913
*/

#target photoshop

try {
    activeDocument.path;
    activeDocument.path.execute();
} catch (e) {
    alert("Unsaved document - there is no containing folder to open!");
}

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html

I use the proxy icon a lot. Yes, it is hidden by default, but there should be ways to do what you need. In short:

• If all you need is to open the folder containing a document open in Photoshop, right-click its document tab and choose Reveal in Finder. 
• If you want to use the macOS file proxy icon of a Photoshop document, for example to drag the document, it must not be a tabbed window, so first undock (float) the window to reveal its title bar and proxy icon. (See demo below)
• If you are in an Open, Save, or Export dialog box and you want to change the selected folder to one already visible or open on the desktop, use the standard macOS shortcut of switching to the desktop, dragging the folder’s proxy icon, switching back to Photoshop before releasing the drag, and dropping the folder proxy icon into the dialog box file list. The dialog box is now pointed to that folder. 

Is what you are trying to do covered by the above, or it is something else?

Personally, I accelerate everything related to accessing recent/favorite files and folders using Default Folder X. It’s paid software, but over the last 20+ years it has saved me so much time in all Mac apps that it paid for itself long ago. Other high-volume production people I know also swear by it.

Demo of revealing the proxy icon:

If you always want to see the document proxy icons, then you may want to change Photoshop settings so that documents always open as windows and not tabs. Go to Photoshop Preferences > Workspace and disable the option Open Documents in Tabs.

Other, newer macOS apps can show proxy icons for tabbed documents because macOS displays the proxy icon in the header bar for tabbed windows. But Photoshop uses a custom window UI that’s a hybrid of how it was originally, which people are used to (designed for Classic Mac OS in the 1990s), and how it is now (macOS over 30 years later). That odd hybrid window UI is what we have to work around.

Edit: I just tried it in InDesign and the undock method doesn’t work there, because InDesign doesn’t show the proxy icon in their floating document windows. In InDesign, you can at least right-click a document tab and choose Reveal in Finder.