Why does the system sometimes glitch when multiple tabs are opened?

In my job, I am an outbound dialer so it is important to have multiple tabs opened at all times. Sometimes, with DialSource, the dialer stops working if I have too many tabs opened. Is there a way to make note of this as a glitch and work towards resolving it at some point in the future. Also, sometimes my side DialSource tab disappears and I'm not entirely sure why. It makes it hard to dial out, track calls, and make notes.