I love Quicksilver and triggers.
Triggers on full screen apps sometimes send me to the desktop. Other times they work.
(If it has been a long time since I have been on that full screen app, it seems that the trigger sends you to desktop on accident.)
I've heard that disabling "show window" on the trigger helps but I don't have that on anyway.
I'm on Catalina, but this has been an issue for years.
Any solutions amigos?