Ran into a bug playing tonight, when I swapped Lae'zel out of my party to pull a few items off of another character, before swapping her back in.

After that for whatever reason, anytime there's a conversation, I have to make sure to talk to Lae'zel. Because if I don't, the next combat I get into, when Lae'zel's turn comes up, the UI is missing. No action bars, nothing. I can move her around, but can't use any skills even with hotkeys, open any menus, nothing. The only thing on screen is, in the bottom right it says Space to Skip, like I'm skipping dialogue. The only way to get out of it, is to reload, as ESC is the only button that will work. The only fix I've found is to talk to Lae'zel after EVERY conversation and immediately choose the option to stop talking to her, which is where I usually quicksave. Because if I don't quicksave, the next combat breaks the game.