Creating a Genie Warlock does not let you choose the "Wish" spell as a part of the expanded Genie spell list. At 17th level, the feature "Mystic Arcanum" allows you to choose a 9th level spell but that list does not include the spell "Wish."

I had the exact same issue, haven't found a fix yet myself

I’ve had this problem so much all of the time it’s sucks so bad please fix!!!

Yes! I keep having this problem too! Please fix it!

This is in fact an issue that I have noticed

From the support thread for Tasha's:

WARLOCK

• THE GENIE - Mystic Arcanum. Wish is not available for the Mystic Arcanum feature.

It is a known issue.

valid