Brave not opening external application

performance
linux

#1

On a website - a link saying email us
I click the link
brave asks permission to open an external application [my mail application is thunderbird on my linux mint 18.3 cinnamon]

thunderbird does not open.

Opeining the same page on Firefx does open thunderbird.
cheers


#2

We have an issue logged for this which can be tracked here


#3