Mac Crashing When Touching Blocks

[Jumjom]

Whenever I join a server if I walk around for a bit then hit something I freeze up and can't do anything other than break blocks, look around and use things in my hot bar. Occasionally it will let me jump but I can only do that rarely. I have had this issue on both Unleashed v1.1.7 and Direwolf 1.5.2 v1.1.3. I also can't talk in chat or open my inventory.

 

[NEXUS2345]

Logs please, we cannot identify errors unless we have logs.

 

[Jumjom]

Maybe I shouldn't have said crashing, I just freeze and can't do anything and I don't get any logs.