Raspberry Pi 4 does not see the monitor when it starts

I observe strange behavior on my Raspberry Pi 4 Model B. I have a rather non-standard production monitor with TV firmware.
If you turn on the monitor and pi at the same time, then pi will not display the picture on the screen. The monitor says "no signal". In this case, the picture does not appear even after a while.
If I first turn on the monitor, wait a little, and then turn on my pi, then the picture will be.
This is very strange behavior in my opinion. How can I fix this? I connect the monitor through the wife to the HDMI0.