Lava Tube Throws Me Inside Game Geometry
Same here. It’s a relatively recent phenomenon (no more than a month or two in my case) but happens reliably.
The workaround is to start gliding once I’ve cleared the outside walls an I’m in the Burning Grotto chamber.
When this happens, use the /bug command in-game to report it. That gives anet your exact location and path, and can help them find the gap in the geometry — which is often only one or two virtual “pixels” wide…