Yes, sorry. This is a Firefox bug and not user error.
On my Linux system, this works with any other browser I try. It only fails with Firefox. If this is user error, it seems every other browser handles user errors much better.
- Firefox: First window is open, running `firefox URL` from the other terminal hangs for 15-20 seconds and then shows the popup "Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.". No new tabs or windows are spawned.
- Chromium: First window is open, running a `chromium URL` command from the other terminal opens a new tab on the existing window.
- Microsoft Edge: First window is open, running a `microsoft-edge-stable URL` command from the other terminal opens a new tab on the existing window.
- Ladybird: First window is open, running `ladybird` in the other terminal opens a new ladybird window.
- Emacs/eww: First window is open, running `emacs --eval '(eww "example.com")'` on another terminal opens a new browser window.
- Netsurf: First window is open, running `netsurf URL` from the other terminal opens a new netsurf window.
- Dillo: First window is open, running `dillo URL` from the other terminal opens a new dillo window.
- Links/XLinks: First window is open, running `xlinks -G URL` from the other terminal opens a new links window.
You can see a clear pattern. Got any other browsers that refuse to run with a message like that? Or is this not a fault of Firefox, and something super extra that everything from other mainstream browsers to more obscure ones somehow handle for the user?
On my Linux system, this works with any other browser I try. It only fails with Firefox. If this is user error, it seems every other browser handles user errors much better.
- Firefox: First window is open, running `firefox URL` from the other terminal hangs for 15-20 seconds and then shows the popup "Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.". No new tabs or windows are spawned.
- Chromium: First window is open, running a `chromium URL` command from the other terminal opens a new tab on the existing window.
- Microsoft Edge: First window is open, running a `microsoft-edge-stable URL` command from the other terminal opens a new tab on the existing window.
- Ladybird: First window is open, running `ladybird` in the other terminal opens a new ladybird window.
- Emacs/eww: First window is open, running `emacs --eval '(eww "example.com")'` on another terminal opens a new browser window.
- Netsurf: First window is open, running `netsurf URL` from the other terminal opens a new netsurf window.
- Dillo: First window is open, running `dillo URL` from the other terminal opens a new dillo window.
- Links/XLinks: First window is open, running `xlinks -G URL` from the other terminal opens a new links window.
You can see a clear pattern. Got any other browsers that refuse to run with a message like that? Or is this not a fault of Firefox, and something super extra that everything from other mainstream browsers to more obscure ones somehow handle for the user?