When I select Rename from the right-click menu in RMC 4, the file's extension is also highlighted.

Say I want to rename example.flv, I right-click the file and select Rename, the whole file name -- example.flv -- is highlighted. If the file's extension is removed -- the user doesn't add .flv -- while renaming a file, what results is a file other than a .flv file.

In RMC 3.11, when renaming a file only the file's name is highlighted.