With the curor positioned in non-selector code such as self, a temp variable, or a optimized selector, quite frequently the breakpoint menu item says "Add breakpoint at step point * ". This results in a walkback (below). Closing that gives me another debugger open with cull sent to nil. Nothing terrible ensued, though.
Make sure breakpoint menu option isn't available if not on a step point and double check that we are actually sending a step point to the server when setting breakpoint.
With the curor positioned in non-selector code such as self, a temp variable, or a optimized selector, quite frequently the breakpoint menu item says "Add breakpoint at step point * ". This results in a walkback (below). Closing that gives me another debugger open with cull sent to nil. Nothing terrible ensued, though.