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The tree expanding handler of the category node in the new file wizard should not be visible if the node does not contain subfolders. For example Java EE node. For more details please see issue 171070.
Created attachment 86912 [details] Proposed fix
If you have no objections I can integrate the proposed fix.
Please provide exact steps to reproduce the problem and possibly screenshot. Either I'm not able to reproduce or I'm looking at something else. Thanks.