Under certain deployment conditions, specifically using hosts file entries and resolving a server which may have multiple IPs/sites configured on it, the relative path references to JS and CSS files can create a cross-site scripting condition which prevents the browser from rendering properly.
v10.1.3 adds some additional code to force fully resolved references to external assets which should mitigate this anomaly.
Note that this isn’t really a problem with DBX (or any other application), but rather a weird condition where the multi-homed server is resolving relative references differently than what the client is resolving via its hosts entry.