I’m running the latest Elementary OS Loki on a VirtualBox VM, running on an iMac with High Sierra.
I’ve installed all of the Xojo system required libraries, as recommended on the Xojo Documentation Linux system requirements page.
But after running the Xojo installer from the Elementary OS desktop or Terminal, I get the Xojo Licence window appearing with no “Agree” button to click.
So all I can do is close the Licence window which terminates the installer process.
Simply put, Elementary and other distros that use the new “Wayland” backend instead of normal X11 will not properly position controls of apps made with Xojo (including Xojo).
If you are running Elementary OS, DO NOT do what @William Yu said:
apt-get install xserver-xorg-core
A friend of mine did that and it totally hosed the system, making it unusable. No amount of Linux single-user-mode wizardry seemed to be able to bring it back. X in addition to Wayland seems to be a very unhappy combination.