Issue #1810148 by Matroskeen, tanc, ravi.shankar, AaronBauman, VladimirAus, jmickela, edurenye, hugronaphor, erikwebb, dawehner, Lendude, tim.plunkett, drupalninja, mohit_aghera, youfei.sun, Nick Hope, seanmrafferty, pyrello, interdruper, attisan, EclipseGc, Blanca.Esqueda: Grouped exposed taxonomy term filters do not work

Issue #2369119 by Lendude, olli, mpdonadio, alexpott, dagmar, mikeker, vprocessor, tlyngej, rakesh.gectcr, herved, Blanca.Esqueda, lomasr, anavarre, tacituseu, ronaldtebrake, aleevas, dawehner, Grayside: Fatal error when trying to save a View with grouped filters using other than string values