This definitely sounds like a bug, probably something to do with adding the image editor which affected the flow of saving CMS items.

The system will automatically add "-2" or "-3" etc to the end of a URL if it clashes with another one of the same name. e.g. if you made two pages called "Banana" it would give the first one the URL ".../banana/" and the second one ".../banana-2/". But in this case it looks like it's accidentally adding -2 when it shouldn't do.

HOWEVER, I've been unable to reproduce the problem myself when playing around with pages on my test site. Does it always happen for you, or are there particular steps that make it happen?

Thanks

Joe