that’s correct, thanks.
we’ll include fix into upcoming update. if you need it asap, please contact us via support at dhtmlx doc com or open ticket.
or open dhtmlxwindows_dnd.js line ~241
this.conf.dnd_evid = this.attachEvent("_winMouseDown", function(e, data){
// add new first line
if (this.w[data.id].conf.allow_move != true) return;
// existing code....
});