It would be enormously useful to have an option in the RenderTexture Inspector to allow Unity to update the preview periodically, like the "Animated Materials" option that causes to update material previews periodically. At the moment, the preview updates only when I interact with the window. I use the RenderTexture Inspector quite often to see what I actually write into a particular RenderTexture. However, as shown in the video below, it would be more useful if it updates as I write to it. @Aras Maybe that's something for your team?