The "intensity multiplier" of "environment reflections" does not do anything

In the scene lighting, changing the “intensity multiplier” has no effect when running my game.

When opening the specific scene in the editor however (without running) it works fine. Is this a known Unity bug and is there a way to solve it?

It seems like I found a way to fix this:

  • Open the affected scene (don’t run it)
  • Go to Window > Lighting > Settings
  • Disable “Auto Generate” at the bottom
  • Click the “Generate Lighting” button
  • Once that process is completed, the intensity slider worked again