The Greens were doing something that bugged me when Corbyn was leader in an election that might've been similar. I can't remember who it was or where though, might've been in a seat in Scotland. I'll try and search around a bit as I'm wondering what it was now but it could take a while. It'd be good if they could clear the issues up though so it can be avoided in future, Jeremy Cunt being out of parliament would've been great.
edit : can't find it but it probably wasn't as bad when thinking of it more, some seat being split because they didn't stand down I think when Labour could've easily had it.