Temporary workaround for IGV-1938:  panning broken in multi-locus view.
Temporary workaround for IGV-1938:  panning broken in multi-locus view.

godotgildor/igv,godotgildor/igv,amwenger/igv,igvteam/igv,itenente/igv,godotgildor/igv,godotgildor/igv,itenente/igv,itenente/igv,amwenger/igv,igvteam/igv,amwenger/igv,igvteam/igv,godotgildor/igv,igvteam/igv,amwenger/igv,itenente/igv,itenente/igv,igvteam/igv,amwenger/igv