Further information that agrees with what you have said!
Spoke with a PA DEPT OF REVENUE rep who said our attempt to claim a credit for tax paid to VA on capital gains from sale of land in VA was disallowed by PA in error. From the PA DEPT OF REVENUE website:
"Pennsylvania has signed reciprocal agreements with Indiana, Maryland, New Jersey, Ohio, Virginia, and West Virginia under which one state will not tax employee compensation, subject to employer withholding of the other state. These agreements apply to employee compensation only." [my emphasis]
https://revenue-pa.custhelp.com/app/answers/detail/a_id/268/~/how-does-working-in-a-reciprocal-agree...
That is the page you referred to above.
We filed correctly the first time, seeking a credit on Schedule G-L for the tax paid on the capital gains. And we can seek a credit from VA for taxes paid to PA on wages earned in PA.
