I have yet to kill the beast in Gaol, but I have killed some other bosses. When I try to teleport to this lamp it doesn’t let me. Is there a glitch that is preventing this or have I done something wrong that won’t allow me to teleport to the Hypogean Gail lamp?
The lamp is deactivated one you beat Rom and this will block you from being able to teleport back to this location. I am guessing this is the cause for you, as I don’t believe there are any glitches associated with this. There should be other lamps nearby as you progress that make this less of an issue once you progress.