You must use a different WHMCS than I have used.
I find the features very helpful and the program very easy to set up and use out of the box.

PHPCoin is terrible security-wise. We have had many customers using this and getting hacked.

phpcoin have really bad design I don't like it !

Strange as Blue says you must be using a differnet WHMCS than everyone else.

WHMCS will always place any new versions in Beta before general release so any bugs/issues are sorted before being released. Version 5.0.3 was in beta for several months before it was released and even then they had to issue a few patches. If you think their is a bug submit a ticket to them or place in the bug section in the WHMCS forum and if it is a bug (99% reported are not usually a bug) they are usually a config issue and can be sorted within minutes.