Animator component gets stuck on disabled state while recording animation until the animation window is closed. This causes an issue when dragging the animation in the timeline window and throws a warning on Animator component due to which the timeline record button gets disabled.

Steps to repro:
1. Create a new project.
2. Create a 3D Object.
3. Select the 3D Object>Open Animation Window>Press the record button>Create a new Animation>Save the Animation.
4. Select the 3D Object>Open Timeline window>Drag the animation created in the previous step.

Actual Result:
The animator component on the 3D object gets disabled and cannot be enabled until the animation window is closed.

Expected Result:
The animator component on the 3D object should get enabled when recording stops.

Occurring on:
2020.2.0a9, 2020.1.0b7, 2019.3.12f1, 2019.2.13f1, 2019.1.11f1,2019.1.0a5.

Working fine in:
2019.1.0a4, 2018.4.14f1

Environment:
Windows 10 & macOS 10.14