Fix popup positioning issue for linux
Fix popup positioning issue for linux

bisq-network/exchange,bisq-network/exchange,ManfredKarrer/exchange,metabit/bitsquare,bitsquare/bitsquare,bitsquare/bitsquare,metabit/bitsquare,ManfredKarrer/exchange,sakazz/exchange,haiqu/bitsquare,sakazz/exchange,haiqu/bitsquare