I voted to close this question before it was edited. After the edit it think the question is of much higher quality and I dont want it closed. There dosent seem to be any way of revoking a close vote (unlike normal votes which can be changed if the question is edited).
Is this an oversight or a delibrate feature? (If the latter then why?)
It's a deliberate feature.
If no one else votes to close your vote will decay in a few days and the post will remain open. You can add a comment to state that you no longer think the question should be closed - this might stop others casting their vote.
If the post is closed you can then vote to reopen. If 4 others (or a moderator) agree the post will be reopened. If you think that it won't get the required votes then flag it for moderator attention and we'll review it and cast a vote if we agree.
In the immediate term doing nothing is the right option to let the community speak.
In extremis a moderator can close and then reopen the question to clear all the current votes.
