Two debugger single-steps are required at reset vector

[quic-egmc]

When attaching the debugger it seems that two single-steps are required to actually single step the first instruction.

Turning on verbose debug, the first single-step results in a memory read (finish read_mem(). The second-single step results in actual instruction execution.

Not a showstopper as it seems to be useable, just a bit confusing.