Folder resouce displays - 1 bytes for the admin user

A folder resource displays the following: "Maximum size for new files: -1 bytes - drag and drop available" above the File manager form element.

Apparently the -1 is displayed when there is no limit to the file size.

To recreate:

1. Login as admin and create a folder resource.
2. Navigate to the folder resource and click edit to launch the file manager form element.

Expected result:
The label that informs the user of the file size limit contains an accurate value for maximum file size.

Actual result:
The label displays -1 bytes as the maximum value for a file upload, which is incorrect.