When a file is moved within OneDrive to a destination directory that contains whitespace the file is instead written to the URL-encoded destination path (i.e. spaces are replaced with %20). This only occurs with internal moves from one directory in OneDrive to another directory in OneDrive.

Scope

• Affects move by drag and drop in Cyberduck as well as Cmd + dnd and the mv command in Mountain Duck
• Affects the Duplicate command in Cyberduck
• Does not seem to affect copying or creating files, only moving and duplicating
• Does not affect files moved into OneDrive from elsewhere on the filesystem
• Does not affect other providers (tested Dropbox)

Steps to reproduce

Moving

1. Connect to a OneDrive account
2. Create a target directory with whitespace if none already exists (e.g. "Camera Roll")
3. Move any file from the OneDrive account into the target directory
4. Sign in to onedrive.com in a browser to verify the moved file

Duplicating

1. Connect to a OneDrive account
2. Create a target directory with whitespace if none already exists (e.g. "Camera Roll")
3. Create a file in the directory if necessary
4. Use the context menu option to Duplicate the file
5. Sign in to onedrive.com in a browser to verify the duplicated file

Observations

Note that in both cases

1. A new directory has been created based on the percent encoding of the target directory (e.g. "Camera%20Roll")
2. The file does not exist in the actual target directory
3. Encoding is additive, i.e. moving a file into "Camera%20Roll" creates a "Camera%2520Roll" double-encoded directory
4. If using Mountain Duck, Finder may show a placeholder for the file in the target directory, a file named ? that is visible until the directory is reloaded

Versions

I have verified this in Cyberduck 6.4.6 (27773), 6.5.0 (27854), and Mountain Duck 2.4.0 (9334) with the Cryptomator integration enabled.