Voltas not functioning properly during playback

Hello, there.

I have this piece of work, and I'm trying to make different parts inside the repeat bars play. (it is incomplete). I want it to play through once, with the first volta, skip the second, then repeat, play the second volta and skip the first. It works in the stable 1.2 build, but it's not working in the latest nightly build.

Is there something I'm doing wrong, or does this need to be fixed?

Thanks!