Style error when using editable number field and footer

When I use the edit feature of the ui-grid and I want to use a footer, there is something wrong in the style after editing.

I used 401 All Features example and I only modified the Age field in order to be a number type. When I edit any Age number pressing the arrows, the ui-grid styles are wrong.

I suspect that there is some mistake at ui-grid method: GridRenderContainer.prototype.needsHScrollbarPlaceholder, but I could not figure this out. If you have any recommendation it will be really useful for me.

Regards.

Here is my plunkr.