That is interesting. Googling "firefox open links in active profile" provides plenty of results about the same issue.
I do know there's a flag to launch the profile manager, but I find that to be a nuisance. I don't want to launch it every time, because I'm constantly launching and killing browser instances. Dedicated shortcuts cuts out that step, but in my case would require 5+ shortcuts via .desktop files on my Linux machine, and a matching set of icons on my Windows machine, with the mental overhead that comes from selecting and switching.
The extension is much closer to the behavior I want (Chrome's).
Conversely, I experience a frustrating Chrome bug on Linux, where after some amount of time, external links open a new instance of every profile, and an error window. I've had no luck troubleshooting that, and it helped motivate me to try Firefox again.
I do know there's a flag to launch the profile manager, but I find that to be a nuisance. I don't want to launch it every time, because I'm constantly launching and killing browser instances. Dedicated shortcuts cuts out that step, but in my case would require 5+ shortcuts via .desktop files on my Linux machine, and a matching set of icons on my Windows machine, with the mental overhead that comes from selecting and switching.
The extension is much closer to the behavior I want (Chrome's).
Conversely, I experience a frustrating Chrome bug on Linux, where after some amount of time, external links open a new instance of every profile, and an error window. I've had no luck troubleshooting that, and it helped motivate me to try Firefox again.