dont remove boardoverlay when mouse leaves carddetails

client/components/boards/boardBody.js

@@ -243,11 +243,6 @@ BlazeComponent.extendComponent({
       {
         // XXX The board-overlay div should probably be moved to the parent
         // component.
-        'mouseenter .board-overlay'() {
-          if (this.mouseHasEnterCardDetails) {
-            this.showOverlay.set(false);
-          }
-        },
         mouseup() {
           if (this._isDragging) {
             this._isDragging = false;