Binding mouse "back" button with Karabiner-Elements and a linux host

[axelson]

I have a Linux host and am connecting to a mac. On Linux the mouse "back" button works great, but when I move my mouse over to the mac and press the "back" button on the mouse nothing happens. Has anyone else successfully set this up? I'm trying to use Karabiner-Elements to control the behavior of the back button on the mac but it looks like the click isn't being picked up at all.

This looks like a related karabiner-elements issue but unfortunately it hasn't gotten any response as of yet:
pqrs-org/Karabiner-Elements#2337