Nice writeup!
This semi-auto lockup problem can be a real problem for some players when it happens to semi-only guns in the field.
For example in countries where the guns must have full-auto disabled, you can't fix it in the field by briefly switching to full-auto. If it happens to you, you're stuck! You can see how this would be a non-trivial and annoying problem to deal with in the field. In fact, this exact issue faced by players in countries like Germany, New Zealand, Australia, etc with semi-only laws is the reason I sell the
Anti-Lockup Unit (aka AEG Forward Assist). It bumps the motor and gears forward just enough to get past the "dead spot" if it happens, but can't be used to fire fullauto.
Like I said, thankfully in Canada we don't have a law against fullauto so it's a product not primarily aimed at Canada.
For us the field-expedient fix of a quick switch to fullauto is easy if the problem does hit you during play (unless your gun has fullauto mechanically disabled).