Our house was built ~1985, and it has quite a few oddities. One of them is an irregularly shaped corner of our garage. Our garage is ~32' (9.75m) x 32' (9.75m), and a significant section (not square ~12' (3.75m) squared) in the back corner is different, uneven and bad.
Are there any rational reasons for this/reasons why it would be a bad idea to try and fix it? It looks like it has expansion joints between the squares.