Navigation within the file manager can become unresponsive when moving files in "either direction" between local device and cloud storage services - Box, Drive, Dropbox, OneDrive. This occurs internally when using the built-in access to those services OR externally when using the iOS share sheet. Its especially an issue with multiple files or larger files (>10MB). The one consistently noticeable symptom when this occurs is upon moving a file from cloud to local device, if file is moved into any already existing local folders unable to navigate back out within the file manager to main/root local folder.
LASTLY, please return swipe menus options - this is a MOBILE application!
SeekerJones about Documents: File Manager & Docs, v6.0.2