Yeah, he seems fine around the house. There were a couple of rooms that he took his time going into, but nothing that seemed too remarkable. We haven't ventured far from home since we got him, but eventually it will be interesting to see how he behaves in new environments. We're biding our time to take him to the beach. It's too soon right now and dogs aren't allowed anyway until later in the year. There's a pond near our house that he's keenly interested in, so it will be fun to see what he makes of the ocean.Aww, poor guy. I'd just keep things positive & not make a big deal over it. If he gets 'weird' about some boundary & is hesitant, just allow him to explore at his own pace & comfort level. Don't push him, or try to force him to 'get over it', but also don't make a big deal or fuss a lot about it/him either.
It would be nice if they could talk & tell us what their past experiences have been, but regardless of what has happened in the past, all you can do is support and work with the dog in front of you today. He'll probably* get over it once he realizes that scary things don't happen in those situations any more (if they ever did?)
* One of my dogs is 11 years old, adopted at the age of 7 months. He came to us with a LONG laundry list of phobias, one of which was crossing through physical thresholds like doorways. He has, for the most part, gotten over this, but! To this day he has to circle two or three times to get his courage up in order to bolt through the 5' wide opening in between our kitchen & sun room. He sometimes gets "stuck" in there & we have to remind him "The force field's down, it's safe to come through!" (sigh... dogs are weird!)
Yes, dogs are weird, lol. You're guy sounds precious. It's puzzling though that they he holds onto his phobia like that for so many years.