Track Matte - Pixel off

I noticed something: when I use a track matte on a layer and keep the mask I used, pixels remain around the effect where it connects with the mask. To remove these pixels, I have to use a choker, but only if the composition of these elements is separate. If it’s in a complex composition, then there’s nothing I can do. Here is a video tutorial I made about this. Can this be modified?
youtu.be/HYAQQuNPfow?si=VygGuXVuRtdxj3au