Currently it (called "change all occurancies") can only find&replace which is not usefull to refactor (as it also changes comments and unrelated similar variables). This is not like rename.refactor e.g. for C#
Example:
$URI= "http://localhost:8080/"
$URI2= "http://Server2"
$IEexe= "C:\Program Files\Internet Explorer\iexplore.exe"
& $IEexe $URI
& $IEexe $URI2
renaming $URI to $URIOriginal will also change unrelated $URI2
Yep, I think there's a bug with the renaming here. We'll get it fixed. Thanks!
Interesting. If you highlight just "URI" on line one, I can repro your issue.
However, if you don't highlight anything, renaming works as expected.
@TylerLeonhardt I can't reproduce, though there is a difference between "clicking" a symbol and "dragging" over the symbol. Dragging will be any characters you select.

I think its also important to note that we dont officially support renaming #1440
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Yep, I think there's a bug with the renaming here. We'll get it fixed. Thanks!