I tried the free version of Vital on Linux Mint 19.3 (based on Ubuntu 18.04), all plugin types and also the standalone.
The standalone shows a window very shortly and crashes, in terminal the only feedback is “Killed”. The LV2 plugin keeps hanging at instantiation. The VST2/3 crash the host with XWindow error.
Hosts tried: Carla, QTractor, MusE.
I have a HiDPI screen and 200% mag setting (Cinnamon desktop), possibly the problem is related to this.