This only appeared after updating to the current version this last weekend. When you try to add an attachment it only shows local drives, none of the mapped drives are shown, and when you try to add the attachment by drag and drop from a mapped drive it wont allow it.
the mapped drives show up and work on all other applications, and in dialogs, just not in emclient.
Also if you attempt to give red tag a name it tells you can’t rename tags, but then adds an additional yellow tag below the one already there. If try it again it just creates additional yellow tags.