Broken bedrock on nether roof chunk borders

[Riyadhcraft]

I was exploring the nether roof to find overworld portals because i wanted to see other players bases and while i was searching i found a lot of holes, they most likely aren't player made (1.19 nether generation shenanigans)because they were all on chunk borders and a lot of the holes were quite large and lead to nothing(some not even piercing through the bedrock).

I will post screenshots