Did you make any adjustments to the resolution size of your project anywhere within the settings or through blueprint? If so, could you please upload screenshots of that information in order for me to test further. Is this a blueprint or a c++ project?
I did not edit the size trough blueprints,although i managed to get rid of the black bars but the window is still a bit stretched. Also it only is stretched when its in a small window, big window and full screen work fine.
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