There was a small bug in our latest skins CSS that was hiding the field.
I've fixed the bug and updated the skins in the mojoskins repository, if you download the latest skins it should fix you issue.
The issue was caused by us accidentally hiding the whole settingrow instead of some
<br> elements inside the settingrow.
At line 17 in the misc.less file this
[id$="_divLdapTestPassword"] was changed to this
[id$="_divLdapTestPassword"] br and then the project was compiled using Prepros through the same steps as described in Customizing Framework with Bootswatch.
If you someone needs to fix the skin they have and don't want to worry about compiling the LESS to CSS, you can open main.css and search for
[id$="_divLdapTestPassword"] and just add a space and
<br> right after it.