"Open all external links in a new tab" does not work when you select some text

I found back my previous failed attempt at installing a Discourse dev environment.
My personal Linux PC was too old and my professional Windows laptop had no hyper threading activated.

My new professional laptop is now apparently hyper threading* so I will see if I can follow the new instructions, without admin rights.

* wmic CPU Get NumberOfCores,NumberOfLogicalProcessors shows more logical cores than physical cores.