Balena Etcher is an app oriented to flash OS images to SD cards & USB drives. It has nosense having this app as the default one to open html files. In fact, and even though Firefox is my default app to open html files, Publii tries to open a page preview with Balena Etcher.
If I remove from my system Balena Etcher Publii works fine rendering a page preview properly (opening the web browser).
So, the question is: which app is working badly? Publii or Balena Etcher. As a simple user, I don’t have a simple way to find it out.
My kindly request to Publii developers is: could you, please, try to reproduce this Publii behaviour with Balena Etcher installed? My setup: Ubuntu 20.04 x64 + Gnome under Xorg + Publii 0.38.3 (from deb file) + Balena Etcher 1.5.117 (from deb file).