I have a custom driver for a mipi panel that worked flawlessly in images from mid-2019 and before. I have rebuilt the kernel and used in the current image(27/12/2019). MIpi communication seems fine. The command "sudo gst-player /home/pi/demo.mp4
" display the video correctly. However, when launching any Qt applciation, i get the following error:

EGL Error : Could not create the egl surface: error = 0x3003

/usr/bin/qt5demo: line 11: 31510 Aborted ./Qt5_CinematicExperience -platform eglfs -qws

Does anyone know the answer to this problem?
Thanks in advance!