Renaming a variable in the variables tab occasionally creates new variables

Here you can see two similarly named variables. One contains debug in the name and the other does not. The one that does not was generated after I attempted to rename the variable in the variable pane. 

The variable is generated from within a set variable node within the stack. I'd like it if the system handled this situation better. 

Also, renaming variables is a huge problem for niagara at the moment. Linked variables aren't updated properly etc. I really think that we need a far better solution to this problem. 

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