Bug: env_projectedtexture does not use updated _rt_Camera texture #1900

Describe the bug

Whilst making a projector for a map, I tried using a env_projectedtexture for a more, real effect. However, even when Always Update is checked, and a func_monitor is in PVS or a info_camera_link is present (and properly set), the env_projectedtexture does not update properly, stuck on the very first time the _rt_Camera texture is generated.

To Reproduce

1. Make a small map, doesn't matter what kind.
2. Make a env_projectedtexture, with it's texture set to _rt_Camera
3. Make a point_camera
4. Make a func_monitor and info_camera_link, with the appropriate settings set.
5. Witness in-game. The func_monitor should be updating, while the env_projectedtexture does not.

Issue Map

Any that tries this setup.

Expected Behavior

With the Always Update flag checked, and info_camera_link being used, the env_projectedtexture should be using the updated _rt_Camera texture (or updating it, for that matter if it is not)

Operating System

Windows 10