By any chance, did you happen to have Covid that summer? MIT bio released an article about Covid infecting or damaging the inner ear, which could lead to tinnitus or dizziness.

Here was one of the articles I read from a different lab.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9531925/

At risk of sounding like a hypochondriac, I had a diagnosed Covid infection and persistent ringing in one ear for around a week that was matched by the feeling of standing on a ship's deck and altered depth perception of objects in my backyard. The trees and bushes seemed to expand forward and grow closer to my eyes if that makes sense.

If this doesn't describe you, I didn't mean to be a bearer of unnecessary worry. The situation you stated just appeared eerily similar to mine.