Apple left a full "Pocket Tuning" panel for scroll edge effects in Beta 5

[pdfu]

macOS 27 Beta 5 includes a new "Pocket Tuning Window" that can change the scroll edge effect in real time in supported apps.

Watch the video for a demo of how it all works. You can tune both light and dark mode effects, and can really make the scroll edge effect disappear.

---

To enable, make the AppKit debug menu visible and select the Pocket Tuning option (h/t u/7racin on Reddit):

defaults write -g _NS_4445425547 -bool true

Restart your apps to see the new menu.

To disable:

defaults delete -g _NS_4445425547

---

Or, with SIP off, except for locally developed apps: open the app and run the following command after replacing the app name:

lldb -b -p "$(pgrep -x TV)" \
  -o 'expr -l objc++ -- @import AppKit' \
  -o 'expr -l objc++ -- id p=(id)[[(id)NSClassFromString(@"NSDebugMenuPocketTuningProvider") alloc] init]; (void)[p performSelector:@selector(_showPocketTuning:) withObject:nil]' \
  -o detach

 

[CrabQueenInc]

What an interesting find!

I don’t understand why Apple will not implement an opaque option for the titlebar. If these hidden options persist into the final release, they may make Golden Gate more legible for some of is.