[Desktop]Cannot make Brave the default browser on Linux

Steps to Reproduce

1. Go to chrome://settings/
2. Scroll to Default browser
3. Click Make default
4. Open a file explorer and open a html file

Actual result:

Nothing happens. The browser is not made default File is not opened

Expected result:

The Make default disappears (like on other platforms)

Brave is made the default browser File is opened

Reproduces how often:

always

Brave version (chrome://version info)

Brave	0.55.6 Chromium: 70.0.3538.16 (Official Build) dev(64-bit)
Revision	16ed95b41bb05e565b11fb66ac33c660b721f778-refs/branch-heads/3538@{#306}
OS	Linux

Tested on Ubuntu 17.10

Reproducible on current release:

Brave	0.55.6 Chromium: 70.0.3538.16 (Official Build) dev(64-bit)
Revision	16ed95b41bb05e565b11fb66ac33c660b721f778-refs/branch-heads/3538@{#306}
OS	Linux

cc @srirambv @kjozwiak @LaurenWags @GeetaSarvadnya

[cept73]

Same issue on Ubuntu 20.04.1 LTC.

Brave was installed via snap. If I delete second browser - Firefox, Brave became default browser, but every time on start asks to set Brave as default. I didn’t found where to disable this check (to devs: need to return this option). If I’ve installed FF again, FF became default automatically.

sudo update-alternatives --config gnome-www-browser gives: no alternatives for gnome-www-browser

For me helps installing Firefox via snap (not via apt as before) snap install firefox then Brave still default after install, but still asks to set default every run (at least might be ability to turn this behaviour off)

[cg505]

@corecontingency What is the output of these two commands?

pacman -Qi brave-bin
ls -l /usr/share/applications | grep brave

Also, what version does brave report in brave://version?