It was working when I initially set it up, but now it shows the outline of the main window on startup and then quits with no error to the console:
➜ ronaldo@thinkpad ~/.itch ./itch
2022/05/08 13:38:53 itch-setup will log to /tmp/itch-setup-log.txt
2022/05/08 13:38:53 =========================================
2022/05/08 13:38:53 itch-setup "v1.26.0, built on Apr 21 2021 @ 21:48:12, ref 48f97b3e7b0b065a2478811b8d0ebcae414845fd" starting up at "2022-05-08 13:38:53.908559603 -0400 EDT m=+0.003727247" with arguments:
2022/05/08 13:38:53 "/home/ronaldo/.itch/itch-setup"
2022/05/08 13:38:53 "--prefer-launch"
2022/05/08 13:38:53 "--appname"
2022/05/08 13:38:53 "itch"
2022/05/08 13:38:53 "--"
2022/05/08 13:38:53 =========================================
2022/05/08 13:38:53 App name specified on command-line: itch
2022/05/08 13:38:53 Locale: en-US
2022/05/08 13:38:53 Initializing installer GUI...
2022/05/08 13:38:53 Using GTK UI
2022/05/08 13:38:53 Initializing (itch) multiverse @ (/home/ronaldo/.itch)
2022/05/08 13:38:53 (/home/ronaldo/.itch)(current = "25.5.1", ready = "")
2022/05/08 13:38:53 Launch preferred, attempting...
2022/05/08 13:38:53 Launching (25.5.1) from (/home/ronaldo/.itch/app-25.5.1)
2022/05/08 13:38:53 Kernel should support SUID sandboxing, leaving it enabled
2022/05/08 13:38:53 App launched, getting out of the way
➜ ronaldo@thinkpad ~/.itch