Using alpha track mattes in After Effects 23.0.0 consistently creates strange rendering issues where layers will disappear completely or display incorrectly. Unrelated layers above the track-matted layer will disappear, and if a track matted layer is the only thing in the composition, the plug-in will get stuck rendering indefinitely. The way After Effects handles track matte layers in the UI has recently been changed quite significantly, wonder if this is affecting LottieFiles?