MFE leaves a transparent border on fullscreen apps.

[luluwaffless]

[ ❌ ] This is not about other apps being displayed weird or etc. [ ❔ ] This is not about rendering issues that caused by a bug in the Windows. [ ✅ ] I've read FAQ. [ ✅ ] I've checked other issues and this is not a duplicate.

Describe the bug Everytime I open an app on fullscreen (browser, video player, games, anything really), it leaves a transparent border that makes me see the background (usually my wallpaper or an app), here's an example of a YouTube video on fullscreen, if you zoom in, you can see the borders of my wallpaper. (screenshot below) I've tried disabling MFE and restarting my browser, which worked and this didn't happen, so it is MFE's or my setting's fault.

To Reproduce

1. Open any app that has full screen
2. Enable full screen

Expected behavior It simply shouldn't have the borders.

Screenshots

Settings

# Mica For Everyone Configuration

Global {
  TitleBarColor = Dark
  BackdropPreference = Acrylic
  CornerPreference = RoundedSmall
  ExtendFrameIntoClientArea = False
  EnableBlurBehind = False
}

# Don't touch explorer and mspaint
Process: "explorer" {
  TitleBarColor = Dark
  BackdropPreference = Acrylic
  CornerPreference = RoundedSmall
  ExtendFrameIntoClientArea = False
  EnableBlurBehind = False
}
Process: "mspaint" {
  TitleBarColor = Dark
  BackdropPreference = Acrylic
  CornerPreference = RoundedSmall
  ExtendFrameIntoClientArea = False
  EnableBlurBehind = False
}

# Apply Mica background to Console Host window
Class: "ConsoleWindowClass" {
  TitleBarColor = Default
  BackdropPreference = Default
  CornerPreference = Default
  ExtendFrameIntoClientArea = True
  EnableBlurBehind = False
}

Windows Version Windows 11 Version 23H2 (OS Build 22631.4037)

[luluwaffless]

It seems the easiest fix for this is setting the corner preferences to default, anything else will cause this error.