[Beta 30] Sound event bug

Gdevelop5 updated the way to select the sound to play, it work fine if the event is in the scenes event.
But if the event is in an external event, you can’t select the sound to play: prntscr.com/j1nfd3
The only way to bypass it so far is to create the event in a normal scene and copy past it in the external event.
(same problem for the music)