There seems to be a bug with the Alpha Math plugin when using masks on the same layer. The plugin will squash and stretch the second source layer to fit within whatever mask you have applied. This is super strange behavior, must be some sort of bug. I am hoping to be able to mask out certain areas of the frame and use it as an effect mask for different instances of Alpha Matte on the same layer. Your plugin is the closest thing I've found that can do what I need, but this is a huge deal breaker for me. Would love to know if this is something that can be fixed in a future update! Thanks!
Thanks!
Can't it be used in Aftereffects 2021?