Thanks for the reply! How can I check the installer version? I believe Snapcraft is the “installer”.
I used the 0.10.13 .snap file downloaded from the homepage. I installed it using the command in my original post (sudo snap install obsidian_0.10.13_amd64.snap --dangerous --devmode). I am using a very fresh install of Ubuntu 20.04.
I have the same problem on Obsidian v0.12.19 freshly installed from the snap image provided on the main website.
Info asked for above:
machine:~$ xdg-mime query default x-scheme-handler/obsidian
machine:~$ xdg-settings get default-url-scheme-handler obsidian
machine:~$ cat ~/.config/mimeapps.list | grep obsidian
machine:~$ echo Shows under [Default Applications]
Shows under [Default Applications]
EDIT: I managed to change it by changing the line x-scheme-handler/obsidian=obsidian.desktop by x-scheme-handler/obsidian=obsidian_obsidian.desktop in the file ~/.config/mimeapps.list. Hopefully I did not break anything else by doing that.