P: Always switches desktop space to the initial

Same issue for me. Dave Roberts keeps posting misinformation on all these problem reports about a “fix” that is just masking a lightroom bug. Adobe please fix this.

I just posted about the same issue. Interestingly I didn't find your  post when I searched but it came up on the side as related.

I just tried your dim issue but mine doesn't do that. I also was never able to run it in the desktop it kicked me to. In fact, sometimes I activate it and it literally slides to the left and I can't use it. I display all of the desktops, activate the one with Lightroom again and it just keeps sliding off to the left. I have to quit it by the icon on the dock. 

I called support last night and after an hour wait got a guy who I could hardly understand. He wanted to share my screen. All I saw was the mouse moving around. I asked him what he was doing and he didn't answer. Finally, he said I need to see it happen and I said it's random, I can't make it happen. He left without even saying goodbye.

I don't think Adobe cares about making the apps work, just collecting their monthly fee.

is there an update from Adobe? the workaround Matthew mentioned does not work for me anymore:

what got worse is that now always when activating the "l" shortcut to dim areas outside the image LR keeps switching desktops and then shows other desktops content dimmed. I am on LR 8.2.1.

I too have this problem! It's been happening for several months now.

Then one workaround I've seen that resolves the issue is moving the Lightroom window to the desktop it kicks me to.

As an aside, I am using Google Earth to georeference images (via Jeffrey's "jf Geocoding Support" plugin). The process doesn't seem to work well when LR is assigned to a Space other than Space #1. If I put LR and Google Earth in Space 2, and use the menu item "Geoencode selected image from Google Earth", the programs can take 30-60 seconds to exchange information. If both are in Space #1, it is quite rapid (a second or less).

No, I have no idea how these issues could be related, but they seem to be.

Hi Dmitry, Alan ,

We are also seeing this issue at our end. We have added this issue to our list.Thanks for bringing this out. 

Regards,
Ruby

Actually, as far as I can tell, Dave's work-around only makes it worse. I assigned LR to "Desktop on Display 1" (I have 2 displays) and after that, on seemingly a random basis, the "Window : Secondary Display : Survey ⇧N" would display only on Display 1. It was very confusing to figure this out.

Bottom line: Lightroom and Spaces just don't cooperate. And since every other program I have seems to work fine, I suspect the problem is Adobe's. Perhaps this is from Adobe trying to suss out how many monitors you have, and not understanding how the spaces and monitors interact.

I just saw this today too -- I moved LR from Space 1 (where it had opened) to space 2. After that I would without warning be booted back to Space 1. Especially strange was when I used Lights Out in LR, and I got these dark window frames placed on top of another app's windows. Obviously, Lightroom Classic is not very compatible with Apple's Spaces, even after all these years.

But it doesn't fix the issue and only offer a workaround.

After creating second desktop. Right click on LR in dock, select ‘Assign to’ and it will stay put!