"Read Render Target Pixel" (or UV) node returns just 100% red, when using RTF RG8 or R8 formats

Just so nobody else wastes a day figuring out what is going on. Other color formats are working fine so I assume it’s an undocumented limitation.

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When checking the length of the Out Samples array using Read Render Target it returns zero, looks like the render targets aren’t even being created for those formats