Fix alpha of merged faces
Fix alpha of merged faces

casimir/kakoune,alexherbo2/kakoune,danr/kakoune,lenormf/kakoune,Somasis/kakoune,casimir/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,lenormf/kakoune,jkonecny12/kakoune,lenormf/kakoune,casimir/kakoune,lenormf/kakoune,danr/kakoune,jkonecny12/kakoune,danr/kakoune,Somasis/kakoune,Somasis/kakoune,danr/kakoune,mawww/kakoune,mawww/kakoune,mawww/kakoune,alexherbo2/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,mawww/kakoune,Somasis/kakoune,casimir/kakoune