In Windows, you can switch the left and right buttons.
But,in Windows,set the right button to main button,after,in MC "Controls" interface,you set a control to right button,describe still is:"Left button".
Here, I have two suggestions(Choose one):
1.Left button is left button,right button is right button,change the detection of button attribute to the detection of mouse button;
2.Change the description of "Left Button" to "Main Button",and Change the description of "Right Button" to "Secondary Button".
Can confirm in 1.20.5 Pre-Release 1.
May relate to MC-577 MC-179929 MC-145691 MC-91315 MC-141942