In the last few days I have been transported three times to another location while I was waiting for action points to continue. The last time was this morning. I was at the Storm Coast, had to wait because I ran out of AP, went to the kitchen and when I got back I was at the Plains of Deceit. What kind of bug could this be? I have never experienced it before.

Would you be going through Story Mode by chance?

Yes.

There you go. That answers it, most likely. Story Mode can move you about a little, depending on choices taken.
(More details than that might be spoiilery, though)

Of couse, always the spoilers. I really hate that word. Now I must think of the other locations I was transported to and find a hidden meaning in them. Thank you for your answer.

closed as not a bug.