Since the latest update - 3.05 - I've notices that when running the tester, the Balance / Margin graph will run all the way to the right, and then stop updating for about 4 seconds, before carrying on. This happens several times during a test.
It is a normal behavour.
Also, the margin level is not being updated with the balance / equity line, until the balance line has reached the all the way to the right.
Sorry, you are right.
At first I understand wrong what had you written.
No worries. Thanks for looking into it.