Gtk-CRITICAL error signal when running Psychopy on Raspberry Pi 4b

I’m getting this error message in my command terminal whenever I try to run PsychoPy:

(psychopy:6855): Gtk-CRITICAL **: 13:46:55.143: gtk_box_gadget_distribute: assertion ‘size >= 0’ failed in GtkScrollbar
*** BUG ***
In pixman_region32_init_rect: Invalid rectangle passed
Set a breakpoint on ‘_pixman_log_error’ to debug

I can open Psychopy from the command line, but it freezes when I try to open it from a saved file. It also continuously gives parts of this error message while the program is running. What is going on, and how do I fix it?

Hello, was this probem solved (and how)?
I am lurking around trying to understand if RPi4 can be a viable hw platform for PsychoPy, or problems are actually still many.
Would you mind summarizing your experience?