ID 352778 - 2D Nodes are not working in a "live" mode when connected to the output of a Render node.

Problem summary:

Connecting an ImageContrast node to the output of the Render node should update a Preview Render from that ImageContrast node.

Steps to reproduce:

1. Open the Hello Pony example scene.

2. Connect the output of a connected Render node to an ImageContrast node

3. Initiate a Preview Render from the ImageContrast node

4. Adjust the ImageContrast contrast parameters.

5. See that the Monitor does not reflect the changes.

6. Preview Render the ImageContrast node again

7. See changes reflected.

Expected behaviour:

The Monitor should reflect the changes made in the ImageContrast node's parameters, as per a "live" mode.

Actual behaviour:

The Monitor does not reflect the changes made in the ImageContrast node's parameters.

Workaround:

No workaround.

Tested versions/platforms:

Customer version/platform:

3.0v1

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