forceRender() doesn't update column width according to remaining space

[daymoz]

I'm using customEvent when my sidebar is shrunk or expanded.
When event is dispatched I use .forceRender() method to update grid layout because it overflows in the page, but it doesn't work.

When I reload page, whether the menu is shrunk or expanded, the grid displays and column widths are calculated correctly so it does not overflow.

I don't know what I'm missing here, maybe recalculate column width is not part of forceRender method ?

[afshinm]

@daymoz could you pull this branch #1267 and test? I believe that branch should address this issue.