The movie render preview window opens 640x360 as usual, but now only that size is captured. If you render in resolutions higher than 640x360, the part of the game that renders beyond 640x360 is not captured.
What Type of Bug are you experiencing?
Editor
Steps to Reproduce
Just render a movie in resolutions greater than 640x360. Anything beyond that is just repeated pixels.
Apparently, the render is only capturing the area equivalent to the preview window in the upper-left corner. In Unreal 5.7, the preview window was small, but the render was complete.
After doing a little investigating, I found that when you open the renderer, it overwrites the “New Game Window” options—including those in the configuration file—and ignores the suggested size.
It seems that the new “basic” option in MRQ, with “AA method” set to “none” and “spatial” and “temporal” both set to “1,” produces the same result as the legacy version.