Checking the (official Ubuntu) build logs it is clear that the issue indeed is the missing dependencies at build time:
Run-time dependency libei-1.0 found: NO (tried pkgconfig and cmake) Run-time dependency liboeffis-1.0 found: NO (tried pkgconfig and cmake) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2075962 Title: XTest emulation on XWayland not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xwayland/+bug/2075962/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs