I am sharing that if you have an Enterprise account, this functionality to lock the navigation pane now exists. This was completed recently as I had requested this functionality for quite some time.
I shared this in a Community post where I had raised this issue. You can find a bit more here: Either lock folder structure/hierarchy/order - #3 by ScottC
@Lucas1 , @bloshinsky , @RebeccaC @bbrunelle , @Charay
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