For me, the issue is purely with keyboard media controls (pause/play, previous, next). They all input twice. I've tried it with the "media control" plugin both enabled and disabled, and the issue persisted regardless. One thing worth nothing, the issue does seem to briefly sort itself out when enabling/disabling the plugin, but it reverts to doubling input to musicbee after a restart. I double-checked, and this issue is not occurring in any other media player on my PC currently.