From my perspective I don't really notice anything "In the moment". It's only after the fact when I look around that I see things have changed. Pretty standard tale tbh. History is different, my actual surroundings (where I live) is different, some things that appear immutable or unchangeable by man are different, etc.
This comic captures the feeling very well. Just replace "building anomalies" with various other things. Though I wouldn't be surprised if slight building changes happened like that as well.