A second light is applied to all slides although it is not in master slide

Test steps:
1. Have a project with e.g. three slides. All slides have basic objects and the play mode is “Play through to next silde” in all slides.
2. Add a light to e.g. second slide
3. Run the project in viewer
-> The light is applied to all slides, although user’s intention is to have the light on one slide.

Edit: the light is seen only in viewer, not in editor