Renamed TMomentaryButton to TRoundMomentaryButton and made it only work for round buttons, see https://github.com/phetsims/phet-io/issues/44
Renamed TMomentaryButton to TRoundMomentaryButton and made it only work for round buttons, see https://github.com/phetsims/phet-io/issues/44

phetsims/sun,phetsims/sun,phetsims/sun