I’m working on a project where the subectId can contain plus signs. In this case it is an email address (yes, plus signs are legit for email addresses). When clicking on the subject link in the Grouper UI, the UI returns “Error: cannot find subject”. I believe the plus is being translated as a space instead of a plus.
Here’s a sample url created by the UI:
What it should be:
My guess is that many of the other special symbols will do the same thing.