Timeline update not being called in standalone game

Hi,

I have noticed a strange bug today. I set up a timeline in a level blueprint event graph and everything works fine in the editor, but in standalone mode the update function of the timeline is not being called. The tick event of the level is still being called, though.

The level is blueprint loaded, loaded at startup, but only made visible later in the game.

Do you have any idea what could cause this problem?

Thanks!