MarketPress is applying tax to shipping, even though the option to charge tax on shipping is unchecked.
Checking MarkePress settings from the database the proper values appear to be stored. I have re-saved product and tax settings, deleted old DB transients, optimized DB tables, cleared browser cache, prayed, pulled out hair. Yet still, tax gets applied to shipping.
Can't update to MarketPress 3.2.7 due to a fatal error that seems related to php5.6. And I can't update to php7 because of some limitation on the hosting side.