I am replying to myself as I finally found how to change that pesky menu
behavior in Windows 10:
cite:
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The other issue is that the 'Handedness' setting has become corrupted or
changed. To change this, follow these steps.
Press the Windows logo key+R to bring up the Run dialog box. In the Open line,
copy/paste the following text.
shell:::{80F3F1D5-FECA-45F3-BC32-752C152E456E}
Press OK.
This will start the Tablet PC Settings configuration dialog (Even if you do not
have a Tablet PC).
Select the Other Tab.
In the Handedness section, place a check mark in the Left Handed option.
Click OK.
This should place the menus on the right
side.--------------------------------------------------------------------------------
See
[url]https://answers.microsoft.com/en-us/windows/forum/windows_7-desktop/context
-menu-going-left-not-right/a09e42df-fdd0-45fc-a501-7e5e145a22b3[/url]
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