Marking as fixed. Hidden in Game track in sequencer now only affects Hidden in Game. Previously it would also toggle "Visible". If "Visible" is disabled on the actor, the Hidden in Game Sequencer Track WILL NOT modify that property. This is the expected behavior. If you intend an actor to be used in sequencer, do not disable "Visible" in its details.
If Visible is off in actor details by default, Visibility track in Sequencer doesn't work in game. It appears to work when you hit play in the Sequencer Editor, but doesn't work in game.
See attached project and PIE or:
Result: Static mesh does not appear
Expected: Static mesh appears part way through the sequence playing
Head over to the existing Questions & Answers thread and let us know what's up.