I had noticed something similar when playing with the PDF activities (which do not say they work with StudioX). I found that sometimes it worked with StudioX when using the advanced editor and using ClipboardX.StringValue, but that didn’t work here.
Thank you; I did indeed find the reference in the properties. May I confirm that the way the software is updated is by heading back to UiPath to download it, as if trying a new trial (but using the existing license key)?
The Studio is one thing, but there is also a Package Manager in Studio that allows you to update individual packages (and in turns update your activities).
What Horia suggested is to update them to the latest versions via the Package Manager.