Hello! I use the itch app, but launching Laigter from the app gives me an error which I think is only related to the said app. So I manually launch the appimage provided. (just to be clear)
I don't have access to my computer right now so I'll check and notify when I can (in 2-3 days).
I couldn't get 1.4, but 1.5 runned fine on ubuntu (18.04).