Level sequencer ensure condition failed when play reverse, why?

[Max.Chen]

Here’s a related post:

Level Sequence played in reverse will crash built game, or cause assert in editor

Thank you for replying. We appear to be using 5.4.2. I was never able to fix this issue and resorted to creating a new Level Sequence Actor for each Sequence I wanted to play, then cleaning up all the Level Sequence Actors whenever the menu screen changes to prevent the build-up of loose actors. It’s horrible, but it works.

It’s a bug that’s been fixed and will come out with the next 5.4.4 hotfix release.