Same here, Windows 10 ver: 22H2. I noticed that though Windows numbered the monitors 1 (secondary on my left) and 2 (primary right in front of me) , the 2nd * is * check marked "Make This My Main Display" , and all my Steam games and other apps respect that, but not the Launcher, every single * fricken * time it loads up onto the secondary display.
Ack! I had searched, my Google-Fu failed. >.< Ok, commented and voted on the main issue, thank you, and apologies. >.<