Not a bug I can't get rock smash

[Mr Super Saiyin]

I always thought you get rock smash from the guy in overalls by sudowodo, but he is not giving me the HM. If i am wrong please let me know where to get it.

 

[Darkfire]

He will give you the TM eventually
for now you can buy it in goldenrod

 

[Mr Super Saiyin]

Where in goldenrod can you buy it if you don't mind me asking?

 

[Darkfire]

The dept store
It was added this update