I am doing a simple edge wipe in Resolve 10 on a Mac. I have an edge wipe between two shots. I click on the editor and I can change the direction of the wipe and put a cheesy white border on it, but the feather option is grayed out. It would be handy to have this wipe be feathered. Any reason why this is not working? Please say it is operator error and it a quick click away from being fixed. Thanks.