Steam in home streaming

General question for a Dev,

Im currently trying to Stream Boundless from my iMac to my MacBook Pro, as I can’t find a solution to why the game won’t run directly, Everything works perfectly while streaming except the trackpad won’t allow the character to look around. It will allow me scroll through the items in my hands or drag the cursor around while in the menus however. support on steam says
Some games run with elevated permissions and Windows prevents remote input from affecting them, as a security measure.

The above means nothing to me but can you advice if this is why I cant use the trackpad or is it something to do with the steam client and host.

thanks

Just to clarify, is this the trackpad being used for the iMac or the MacBook Pro?

Sorry it’s for the macbook pro