audio that's reversed not playing

I've attatched a screenshot of the audio clip (the one in question is the one to the right of the playhead) before I reverse it, and after I reverse it (it has a red line across the clip, still has a waveform, but plays on mute, and nothing shows up in the audio meters either.) When I return the clip to its non-reversed form it works fine again. I've even noticed that sometimes it works and sometimes it doesn't- seemingly randomly. Restarting Premiere doesn't help. I've used this same process of reversing audio in recent weeks, and it's worked perfectly, so I'm not sure why this issue is popping up all of a sudden.
Any help would be appreciated.