Grimrail Depot vehicle glitch?

So I've been running GD normals for a bit now and I've had a certain glitch pop up twice now. I pick up mortars and run into a turret, but my UI starts spazzing out as soon as I jump in; the vehicle UI doesn't show at all, and my normal action bars jump up and down about 1-2 times a second. I had to bind a key mid-fight to exit the vehicle and became the member of the team pulling the least of the group's weight each time this happened.

The issue I'm having is the exact one described in the second post in this topic on the Battle.net tech forum. I'm not sure if any of my addons are causing the issue (I haven't tried disabling any and the glitch has happened intermittently without disabling anything). My addons are: Deadly Boss Mods, TellMeWhen, Recount, Omen Meter and Master Plan. I would expect that DBM or TMW would be the ones causing the problem, but before I go screwing around with them is anyone else having this issue?

Thanks.

Edit: Forgot one addon: Milk Scrolling Text.