\overline L where ̅ should be stretchy. in \bar L it shoud not be stretchy.
If you replace bar:["Accent","00AF"] with bar:["Accent","00AF",1]
\bar will produce <mover><mi>L</mi><mo>¯</mo></mover>
instead of <mover><mi>L</mi><mo stretchy="false">¯</mo></mover> $$\bar L$$ Objective: \bar and \overline shouldn't be the same $$\bar{aaaaa}$$ Fix: use default.