Alright, so it seems there were some lingering issues in the previous hotfix, so we're going to try this again. Based on my research into how Ren'Py handles mobile devices, I discovered that some newer phones have screens that are over 6 inches, which is the cutoff between "small" and "medium" devices in the Ren'Py code. Going off the Ren'Py documentation, I used the recommended method of making all phone GUI for the "small" variant, while these new phones are tracked as "medium" when they launch a game.

For the time being, I've set the game to automatically switch to the small variants if it can detect the device is a phone, since "phone" is also an accepted variant that Ren'Py tries to calculate when it starts up. It's a bit of a workaround, but it should resolve the issue where big phones will use the PC GUI in the wrong orientation.

Anyone who downloaded the previous hotfix should try the new one and see if that fixes the issue. I'd test it myself, but I don't have any phones with a big enough screen to run the tests. Hopefully this workaround will be a big enough band-aid until I can figure out if there is a better way to fix this (should there be one).