Mobile Preview (PIE) cannot launch in Portrait View
I noticed that the Mobile Preview (PIE) cannot launch in any of the portrait presets in the "Play In Standalone Game" section of the Editor Preferences. EDIT: The "Standalone Game" option (which uses SM5) also cannot launch in portrait. However, launching in "Play in New Editor Window" works correctly.
This unexpected behavior occurs only when running my 1440p monitor at 1080p (since the Editor does not yet feature scaling for High DPI monitors). When the monitor is set to its native 2560 x 1440p resolution, the Mobile Preview launches in its portrait mode correctly, the same as "Play in New Editor Window".
Thanks for your time and attention to this matter.
Kind regards, ~Adam Janz
This issue has already been reported as UE-29366. I have retested this issue and added some additional information you have provided here. You can track the progress of this issue from the following link: Unreal Engine Issues: UE-29366
answered Nov 17 '16 at 08:05 PM
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