One thing I did note, taking the elevator up from HY goes to WBL. Taking it down again goes to WK. And going down this happens:
That may have been the start of the weirdness.
There were a few other places that happened. Whenever I change locations the map resets as if I did not have it and had not been there..although sometimes it retains some of it.
I definitely did die and continue several times. I also occasionally had to refresh the browser because changing and coming back to the browser tab, the character would disappear. A refresh and loading a save would fix the missing character.
I am playing the browser version.
Hopefully that will help :)