Windchill 10.2 sidebar folder names incorrect

This is a strange problem that has been happening regularly to my windchill pages. When navigating folders within windchill, the side bar will sometimes start displaying the wrong folder links. I have attached a screen shot of an example. I cannot find any pattern to it and it is very annoying. The side bar will display folders that are NOT within the selected folder tree in place of of the folders that should be there. When the links are clicked on it brings you to the labeled folder.

In the first screen shot attached you can see the folders "Assemblies" & "Banjos and Banjo heads" have been replaced by two completely different folders. When I expand those folders they display the contents of the folders that they replaced but they are filled with incorrect folders as well (pic 2 highlighted). When you CLICK on the incorrect folder it will open the folder is is named as.

None of this happens when navigating through the main center window, only the side bar. I would be more than happy to answer any questions to clarify.

Is this a bug? Some strange setting that needs to be changed? Can anyone help me out here?

EDIT: Refreshing the page seems to sort it out but why is it happening in the first place? Im guessing software bug