I think that's normal behaviour on stock firmware (11.1). I was testing the 11.1.0.34 U payload for OoTHax on a stock machine and it opened up the Homebrew Launcher fine, but then froze completely on a yellow screen when trying to select the exploit installer.
It works normally when full A9LH and Luma has been installed.
I see it does. My point is, it wasn't doing that before 11.1. Aka, Nintendo tries to block writing saves of exploit games.