Just as @applee, I suspect that this thread possibly discusses several different bugs. Notably, I believe the problem described in reply #3, and maybe by @kristatos are the same as the one I described in this other topic. The issue in that other topic is related to how UBports interfaces with the android gps drivers and it affects all apps using gps on all ported android phones released since around 2020, but possibly with app-dependent symptoms : freezing, crashing, or just going on with a frozen location. The good news is that the other topic's bug has a working fix which should hopefully land in an upcoming OTA.

@hummlbach Thank you for the information! A hug!

Rather than ditching your 18.04 installation for a 16.04 one, or running 16.04 in a virtual machine, you might want to consider running 16.04 in an LXD/LXC container. $ sudo snap install lxd ... $ sudo lxd init ... $ sudo lxc launch ubuntu:16.04 devbox -c security.nesting=true ... $ sudo lxc shell devbox That will install the lxd snap, initialize lxd for use, launch a privileged lxc container named devbox based on a 16.04 image and finally drop you in a shell in the lxc container.

@costales I don't know the answer but I've linked your question in the OpenStore group (https://open-store.io/telegram).