Weird Issue with x64 Windows Install of Netbeans

I teach Java at the HS level and we work in a lab with 30 or so computers. We use Netbeans as our IDE.

I am noticing a weird phenomenon that I don't understand: On computers running the x86 version of Windows, the multi-cursor tools works in Netbeans.

However, in x64 the ctrl + shift + click just highlights a block of text.

I have checked the control mapping and searched for weeks and haven't been able to solve this issue.

https://stackoverflow.com/questions/55300155/multi-cursor-not-working-on-certain-computers-netbeans