That doesn't normally happen to platforms of this size.
There are probably tons of baked in URLs or platform assumptions that are very easy to break during their core migration to Azure.
ISTR that the lift-n-shift started like ... 3 years ago? That much of it was already shifted to Azure ... 2 years ago?
The only thing that changed in the last 1 year (if my above two assertions are correct (which they may not be)) is a much-publicised switch to AI-assisted coding.