I'm running Citrix Receiver (v13.9) in Fedora 27 Gnome and it works without any noticeable problems. I used what Citrix calls "Red Hat Web package" from here: https://www.citrix.com/downloads/citrix-receiver/linux/receiver-for-linux-latest.html I read somewhere that the web package (whatever is the difference to the self-service package is...?) does not need webkitgtk. So all is fine!
I think from the link that @villykruse posted, you'll find the forum thread talking about the web package. I would not go the route described in Citrix forum and install gnucash and then link the libs. If you don't need it, you don't want webkitgtk!