Focus the bridge textarea automatically when opening the provide a bridge manually
This was a user suggestion in https://forum.torproject.org/t/new-release-tor-browser-13-0/9703/45:
Another minor thing i found:
In some previous version of Tor Browser the textbox for manually adding a bridge was already marked so you could Ctrl+V right away.
Now you first have to click in the box to be able to paste.
I think it makes sense.