Running torbrowser-launcher 0.2.6 I'm not able to open new tabs/windows through executing torbrowser-launcher again. TBB always tells me that there is already another instance running:

$ rpm -qi torbrowser-launcher 
Name        : torbrowser-launcher
Version     : 0.2.6

Running it the first time works fine:

$ cd ~/.local/share/torbrowser/tbb/x86_64/tor-browser_en-US/ && ./start-tor-browser.desktop https://github.com/micahflee/torbrowser-launcher
Launching './Browser/start-tor-browser --detach https://github.com/micahflee/torbrowser-launcher'...

This opens a torbrowser window opening this projects repository.

Doing it a second time (while the other one is still running, looks exactly the same, BUT TBB complains:

Tor Browser is already running, but is not responding. To open a new window, you must first close the existing Tor Browser process, or restart your system.

This makes it impossible to use TBB/torbrowser-launcher as an opener for URLs in other programs.