Lightroom Classic: Collections and Publish Services disappear

Using LR Classic CC.

I just transitioned from a 6 year old Lenovo W510 laptop to a Dell XPS 15 Touch. I immediately noticed that Collections and Publish Services were missing in LR on the Dell. Just gone. There is a huge black space instead. I reached out to adobe.forum for help and tinkered while waiting. Meanwhile, I stumbled across an interesting behavior: If I closed Folders, Collections and Publish Services appeared! Yay! But when I re-opened Folders, Collections and Publish Services vanished again. I use all of these extensively, so this is a huge annoyance and inconvenience.

I was advised to removed/re-install LR, but there was no change in behavior. It turns out that LR has some inexplicable/undocumented limit as to how many folders it can show (!). How I know: I have 627 folders and about 15 or more were expanded. That is, each was showing their numerous sub-folders. I closed all the sub-folders so that only the 627 main folders were listed under Folders and Collections reappeared (!). But not Publish Services. That remained missing. Next, I closed Folders, collapsing all my folders and Published Services appeared (in addition to Collections). Of course, when I re-opened Folders, Collections appeared (but not Pub.Serv.). It will be incredibly annoying/awkward to have to play games opening and closing Folders to get access to Collections and Publish Services and vice versa, going forward. I am massively disappointed. It gets worse ...

I ran into a similar problem with the Keywords List a couple of years ago. I discovered, on my Lenovo W510, that the list only showed my keywords through the letter P, even though I have many others that go all the way through to the letter Z. Oddly/amazingly, LR only shows keywords about halfway through the letter D on my new Dell XPS 15 Touch! So the vast majority of my keywords can't be found or seen or edited.This goes to explain why I didn't encounter the limit on folders on my Lenovo. Something about LR Classic CC and the Dell limit folders and keywords to a greater degree than on the Lenovo. Bizarre. Infuriating. Disappointing. I'm really quite angry that I spent 4+ hours figuring all this out, wasting time of a number of other LR users, including Victoria Bampton, and having to writing this "conversation."