update

src/core/wrapper/layout/flex/flex.horizontal.js

@@ -37,7 +37,7 @@ BI.FlexHorizontalLayout = BI.inherit(BI.Layout, {
     _addElement: function (i, item) {
         var o = this.options;
         var w = BI.FlexHorizontalLayout.superclass._addElement.apply(this, arguments);
-        var columnSize = o.columnSize.length > 0 ? o.columnSize[i] : item.width;
+        var columnSize = o.columnSize.length > 0 ? o.columnSize[i] : item.width >= 1 ? "" : item.width;
         w.element.css({
             position: "relative"
         });

src/core/wrapper/layout/flex/flex.vertical.js

@@ -36,7 +36,7 @@ BI.FlexVerticalLayout = BI.inherit(BI.Layout, {
     _addElement: function (i, item) {
         var o = this.options;
         var w = BI.FlexVerticalLayout.superclass._addElement.apply(this, arguments);
-        var rowSize = o.rowSize.length > 0 ? o.rowSize[i] : item.height;
+        var rowSize = o.rowSize.length > 0 ? o.rowSize[i] : item.height >= 1 ? "" : item.height;
         w.element.css({
             position: "relative"
         });

src/core/wrapper/layout/flex/wrapper/flex.wrapper.horizontal.js

@@ -33,7 +33,7 @@ BI.FlexWrapperHorizontalLayout = BI.inherit(BI.Layout, {
     _addElement: function (i, item) {
         var o = this.options;
         var w = BI.FlexWrapperHorizontalLayout.superclass._addElement.apply(this, arguments);
-        var columnSize = o.columnSize.length > 0 ? o.columnSize[i] : item.width;
+        var columnSize = o.columnSize.length > 0 ? o.columnSize[i] : item.width >= 1 ? "" : item.width;
         w.element.css({
             position: "relative"
         });

src/core/wrapper/layout/flex/wrapper/flex.wrapper.vertical.js

@@ -33,7 +33,7 @@ BI.FlexWrapperVerticalLayout = BI.inherit(BI.Layout, {
     _addElement: function (i, item) {
         var o = this.options;
         var w = BI.FlexWrapperVerticalLayout.superclass._addElement.apply(this, arguments);
-        var rowSize = o.rowSize.length > 0 ? o.rowSize[i] : item.height;
+        var rowSize = o.rowSize.length > 0 ? o.rowSize[i] : item.height >= 1 ? "" : item.height;
         w.element.css({
             position: "relative"
         });