FX not working on Android

I’m calling:

object1.preFX.addGlow()

object2.preFX.addColorMatrix()

On Android 13 (Google Pixel) the objects become gray rectangles when the fx is applied. Works great on desktop, iPad and iPhone. I cannot find this reported anywhere.

Help!

By chance, does the browser show any error messages if you try to do remote debugging?

We checked and there are no errors. Now the object with preFX.addGlow shows as either a red rectangle or a blue/green gradient rectangle depending on the Android device.