Rect Light Source Texture is not showing up in specular reflexion in 4.22

Hi people!

This rect light with a Source Texture used to show up like this in 4.21 (macOS 10.13.6) :

And now (4.22) looks like this (the color differences are normal) :

The rect light can’t show any textures at all on materials with specular reflexions, and I was wondering if this was a bug or if it’s a lost feature in 4.22, or if updating to a newer macOS would fix it.

I’ve tried to:

  • Use a Light Function Material instead
  • Use many other textures
  • Change the setting to movable, static and stationnary
  • Make a new rect light from scratch

Anybody uses some rect light on UE4.22 on macOS?

Thank you!