Same issue here. Symptoms and reproduction on my end is identical to this thread, but the solution doesn't work for me. The problem only appeared with the latest version - before the update (about a week ago), everything worked fine.
The browser opens and the authorize button works, but Vortex doesn't login when the popup opens. Tried copying and pasting the token manually, but the save button in Vortex seems to do nothing. Also went through the usual steps (disable AV, disable popup blocker, disable adblocker, etc.) without success.
Log tail: