Grace notes within beamed tuplets

This is a pictorial duplicate of a bug report:
Grace notes within beamed tuplets display as noteheads only; no stem, no flag (or beam, if more than 1 grace note). If the tuplet beam is broken, the display is correct, but music is much harder to read:
When there is no tuplet involved, grace notes display correctly:
Best wishes,
Thorrild
Grace notes within beamed tuplets display as noteheads only; no stem, no flag (or beam, if more than 1 grace note). If the tuplet beam is broken, the display is correct, but music is much harder to read:
When there is no tuplet involved, grace notes display correctly:
Best wishes,
Thorrild