When entering into play mode with additively loaded scenes in the Hierarchy, "Bake paused in play mode" text incorrectly appears in progress bar. This behaviour is only expected when user enters play mode while the scene is still baking with Auto mode enabled. However, this is not the case with the project attached to the case. Auto mode is disabled, lighting is generated manually (lighting data asset exists locally inside the project) but the status of progress bar still changes. This is unexpected.

Steps for reproduction:
1) Download the project from the link below
2) Generate lighting
3) Enter into play mode
4) Observe the behaviour in progress bar.

Notes:
- Not a regression
- The behaviour of the issue is indeterministic, presumably due to threading problem. Thus, it's not possible to consistently reproduce the problem
- An image is attached below to show the problem