OAuthService.loadDiscoveryDocumentAndLogin results in ERROR URIError: URI malformed

[mdbel]

If you have an Url hash with encoded special characters (%,&,?, ...), the URI malformed error will be thrown when calling OAuthService:loadDiscoveryDocumentAndLogin without providing a custom hash fragment.
After some code analysis I noticed that this was due to double decoding of the hash fragment:

• getCodePartsFromUrl calls this.urlHelper.getHashFragmentParams(); if no queryString (no customHashFragment or window.location.search)
• getHashFragmentParams first decodes window.location.hash and then executes this.parseQueryString(hash) with that decoded hash,
• parseQueryString decodes the url hash again (see value = decodeURIComponent(escapedValue));, which results in ERROR URIError: URI malformed