When you use a pen tablet with a Windows environment, in some cases, holding down your pen point for a longer time will be interpreted as a right-click, due to default Windows settings.
To turn this setting off, please try using the following procedure.
Select the "Apps" tab in the taskbar search box, then search "Control Panel" to open the "Control Panel" page.
- Select "Hardware and Sound".
- Select "Pen and Touch".
- Select "Press and hold", and then select "Settings".
- Remove the check from "Enable press and hold for right-clicking", then select "OK", and close the window.
* Images are screenshots from Windows 10.
Display titles may differ slightly depending on the version of Windows OS you're using.