People adapt and become less human... There must be a weird sort of anxiety to walk around and be extra cautious that reality can suddenly turn into a glass wall.
I once ran into a glass door in my house a few years back. For months after that, I had anxiety and "flashback" like replays of the event when walking anywhere near that door/area in my house. That one incident affected the functioning of my brain for a really long time, it was quite jarring.
Same happened to my dog in a hotel patio. She wouldn’t trust that the door was open probably due to a past event (older rescue). After a few days she trusted me when I called her through and finally believed the door was open. Then of course she saw a bird went to run through and this time it was fucking shut.
Never voluntarily went through glass doors again. Can’t blame her. Rest in peace Lucy you were a gem of a dog.
(Dog people have that one dog they seem to click with and she was mine. I’ve been the guardian of many dogs. She was a gross old pug filled with cancer and heart worms and love.)
I had a similar problem with my dog, when I was a kid.
From that day forward, whenever I opened the door to let her in or out, I had to prove to her that the door was really open, usually by putting my arm through the space, or whatever.
She was the best dog, ever. Despite her -- not irrational -- fear of glass and screen doors.
I mowed into a ground nest of hornets at my house a few months ago. Took me over a month to get back in the saddle. I "felt" the stings every time I walked near that patch.