Plank does nothing when launched on Gnome session startup

[Milan Špinka]

GNOME 42 with X11 on Ubuntu 22.04:

Plank works just fine when launched from application menu or terminal, but does nothing when added as a Startup App in Gnome or when an entry is added to /etc/xdg/autostart.

Practically, one has to "killall plank && plank &" in order to get it to show on the screen.

I tried adding a manual entry for a startup app that launches plank and dumps std output to a file using "Exec=plank > /home/.../Desktop/plank.log", but the file was either not created at all, or left empty. I'm afraid that's where my capabilities to debug this issue end.

Some (potentially relevant) info:

Plank version: 0.11.89

System:
  Host: lenovo Kernel: 5.15.0-30-generic x86_64 bits: 64
  Desktop: GNOME 42.0
  Distro: Ubuntu 22.04 (Jammy Jellyfish)

Graphics:
  Device-1: AMD Cezanne driver: amdgpu v: kernel
  Display: x11 server: X.Org v: 1.21.1.3 driver: X: loaded: amdgpu,ati
    unloaded: fbdev,modesetting,radeon,vesa gpu: amdgpu
    resolution: 3840x2400~90Hz
  OpenGL: renderer: AMD RENOIR (LLVM 13.0.1 DRM 3.42 5.15.0-30-generic)
    v: 4.6 Mesa 22.0.1