Can't use a camera after being used in a camera sensor

[SmlHugod]

Describe the bug
I have an HUD with a Render Texture bind to a camera called Camera 2. So in game, I have the main Camera View and a little view of Camera 2.
If I decide to use Camera 2 in a Camera Sensor, then in game my Camera 2 dissapears

To Reproduce
Steps to reproduce the behavior:

1. Create a simple project with 2 cameras displayed in the Game view (for example a main camera + a Raw Image using the other camera as a background texture in a Canvas).
2. Click on play : we see both cameras.
3. Now create an agent and add him a camera sensor using Camera 2.
4. Click on play : the camera dissapears.

Environment (please complete the following information):

• Unity Version: Unity 2023.2.25f1
• OS + version: Windows 11
• ML-Agents version: ML-Agents release 21
• Torch version: 2.2.2+cu121

[miguelalonsojr]

This is intended functionality. You can re-enable the camera to be used beyond collecting observations in the CameraSensor component by checking the "Runtime Camera Enable".

[SmlHugod]

Oh thank you so much. I feel so dumb !

[miguelalonsojr]

Glad it worked out. :)