Inner beam breaks won't display across barlines [MS4]

See attached.

Measures 1-2: If an inner beam break is put across a barline it doesn't display
Measures 3-4 : a regular join beam will display
Measures 5-6: if the measures are joined, the inner beam break displays

Workaround for one stave is to join the measures, insert a cosmetic barline, and adjust the measure count. If you have additional staves, then the extra surgery required to fake separate measures can be super tedious.