I don't get what you mean with superimposing filter. Do you mean the Bright filter or a mod Shader effect or Box scene ?
Viewing post in Effects change the colors and brightness
I meant almost any effect. The growing effect, the pixelate effect... For example, pixelate doesn't just pixelate, it also changes the brightness and color palette. I don't think it's intended, as the pixelate effect on your page doesn't change the color like mine. Here's a (sfw) example, in which I have no other filter, and have a clean install: https://imgur.com/a/qvmDs5m