When a package is compiled in an editor, if the spec and body are both in the same editor tab, the spec gets compiled, but the body does not. At the bottom of the window it states the body was compiled, but when it is checked in the schema browser, none of the changes are shown. The option "Compile Spec and Body as a pair" is checked under View | Toad Options | Execute/Compile.
WORKAROUND:
Compile the spec and body separate in two different editor tabs.
STATUS:
Waiting for a fix to be released in a future version of Toad for Oracle.