name root folder shortened by 1 letter; no uppercase

In the settings, I have choosen a specific folder (Archive Documents) as the root folder. On the front end, the name of this folder is not complete: the last letter disappears (so it becomes Archive Document without the last s)

The same happens when I use a shortcode on a specific page where I set a subsub folder, like
Archive Documents\Meetings\2016-07-04-Report
On my page, through the shortcode I have set 2016-07-04-Report as the root, and the last t is missing.

So it’s always happening on the root, whatever the root. The length of the folder name doesn’t matter: either long or short, the last letter of the name is missing.

Second point: the uppercase letters in the root and lower folders are transformed to lower case. Archive Documents\Meetings\2016-07-04-Report is represented as

>> archive document  (s is missing)
    >> meetings
        >> 2016-07-04-report

The uppercase letters only disappear in the path below the root: when subfolders are shown as a list, they are as they should be.

Only exception for both problems: when in the settings I use “Home” as the root label. Here, it does show the complete word, ánd with uppercase.

Sorry I cannot provide the url of the site, as it is members only.