Short verssion: looks like no way to create pull request using github website using Windows Vista?
Longer version: Yes, I know IE, Opera, Chrome and Firefox current versions do not support Vista.
The specific problem is two-fold: “Checking mergeability… Don’t worry, you can still create the pull request.” stays forever, and “Create Pull Request” button does nothing which is a problem.
I’ve tried to find _any_ browser which would support Vista. So far I was able to find Lunascape6 - I know, a weird one - which allows to use WebKit rendering engine. GitHub does not show an “unsupported” version message yet still - same issue “Checking mergeability…” hanging and same “Create Pull Request” button does nothing.