continue doesn't work when debugging with breakpoints

I have a function that I want to debug, so I add error 0 as a rudimentary breakpoint:

f = x -> (
    print x;
    error 0;
    print x;
x)

Entering help in the debugger says:

           continue            -- leave the debugger, continuing execution
                               -- with current expression

Unless I'm misinterpreting this, it means if I enter continue, that means continue until the next breakpoint. But this has never worked for me:

i1 : load "test.m2"

i2 : errorDepth=1

o2 = 1

i3 : f(12)
12
test.m2:3:5:(3):[1]: error: 0
test.m2:3:5:(3):[1]: --entering debugger (type help to see debugger commands)
test.m2:3:5-3:11: --source code:
    error 0;

ii4 : continue
test.m2:3:5:(3):[1]: error: 0
test.m2:3:5:(3):[1]: --entering debugger (type help to see debugger commands)
test.m2:3:5-3:11: --source code:
    error 0;

ii5 : continue
test.m2:3:5:(3):[1]: error: 0
test.m2:3:5:(3):[1]: --entering debugger (type help to see debugger commands)
test.m2:3:5-3:11: --source code:
    error 0;

ii6 : return
test.m2:4:5:(3):[1]: --stepping limit reached
test.m2:4:5:(3):[1]: --entering debugger (type help to see debugger commands)
test.m2:4:5-4:11: --source code:
    print x;

ii7 : return
test.m2:5:1:(3):[1]: --stepping limit reached
test.m2:5:1:(3):[1]: --entering debugger (type help to see debugger commands)
test.m2:5:1-5:1: --source code:
x)

ii8 : return
stdio:3:1:(3): --done stepping, returning to top level

i9 : oo

o9 = 1

Note that if either continue or return had worked as I described, I should have got 12 as the output. Am I misunderstanding what continue does? At the very least, the documentation begins with "leave the debugger", and that didn't happen, so it should be clarified and a facility for what I described above should be added.

Reproduce the behavior by loading test.m2, setting errorDepth=1, and comparing the debugger's help, continue, and return commands around error 0. Trace the debugger command handling and clarify whether continue should leave the debugger or resume until a later breakpoint; done means the documented behavior and the reported 12 output are consistent.