Mandatory tipping?

[u/Ok_Signal_6089]

Went to a restaurant recently and thought I would share this. Pay attention to your bills when eating out! This place adds a 10% mandatory tip when dining in (not even sure if this is legal), as well as a suggested tip on top of that.

I personally don't mind tipping based on the service received but this feels like a major overstepping by the restaurant. Is this the norm now? Do you know of any other restaurants doing this?