Feed table undo icon issues with lots of columns
<md-button aria-label="Undo"
class="md-icon-button layout-margin-left-right-0"
ng-click="vm.undoColumn($index)"
- ng-show="columnDef.history.length > 1">
+ ng-if="columnDef.history.length > 1">
<ng-md-icon md-icon icon="undo"></ng-md-icon>
</md-button>
<span ng-if="vm.model.table.method == 'SAMPLE_FILE'"></span>
