Lighroom changes secondary monitor when minimized and then restored

I'm using Lightroom Classic for Windows with 3 monitors. I'm always (and that unfortunately means many times a day) telling it to use monitor 2 for the secodary windows (Edit/Preferences/Display/Choose monitor for secondary window). After I do it Lightroom indeed uses the monitor I want. But if I only minimize it and restore it starts displaying on monitor 3 instead of 2. When I check the preferences monitor 2 is still checked as chosen for secondary windows but nevertheless Lighroom uses monitor 3. So now I have to change the preferences  to monitor 3 and back to monitor 2 and again I have secondary window displayed on monitor 2... but only until I minimize Lightroom again...