I have one that I know of.  He claimed himself this year.   The IRS adjusted his return and gave him the $600 but not the $1,200.  The notice said the adjustment had to do with a name, social security mismatch on a dependent claimed on his return.  He filed single with no dependents.   He also received a separate deposit of $1,400 for the third stimulus.   It makes no sense that he would get the first and third but not the second.