Is it just me, that after the most recent rpi firmware update display_rotate/display_hdmi_rotate is not working with the fkms driver?

I found the following in the official documentation:

If using the VC4 FKMS V3D driver (this is the default on the Raspberry Pi 4), then 90 and 270 degree rotations are not supported. The Screen Configuration utility provides display rotations for this driver.

Unfortunately I have no clue how to run the screen configuration utility. There’s always a black screen even if I run pm2 stop mm.