Minecraft starts on wrong monitor?
More information?
Which monitor have you set as your main monitor?
How many monitors do you have? Etc?
Should start on your main monitor. So the one you have selected as the main monitor
2 monitors, and I haven't set a main monitor at all…
Um, actually you have set one as the main display (Windows 10: right click on the desktop → display settings → scroll down → "Use this display as the main display")
Didn't set a main monitor.
How is that possible? XD
Just have to set the right one as the main monitor.
A main monitor is always set, by default.