Hi @kobekoto - that’s curious! When I test that flow here, the Authorised window pops open and then closes as expected. There must be more to this we’re not seeing.
Do you have any browser extensions installed that might affect how popup windows or cross-window communication is handled? That’s not usual, but it’s a possibility.
The other thing you can try is to go into GitHub Settings and to Applications and to remove the Netlify app from both the Installed and Authorised app tabs. When you try to link your repo from Netlify again, you’ll be taken through the process to reauthorise them. It’s basically like turning it off and on again
Let us know if that gets you any further. I’m sure we can get to the bottom of it. Thanks for your patience while we do!