You are correct that on chart the value of total equity seems to be OK (i.e. it includes cash). Yet, the trouble is when I ask about about equity tomorrow my algo will see no cash. And my buying power now equals only to stock held in portfolio - look at last chart effective buying power
For me, it is an ongoing issue for months. I tryiedto raise it a while ago (Cash 'magically' being added to paper portfolio), but nada. It happens again today. I was holding no positions. My cash balance was 50415, and all of a sudden, it was 50000.