Fails to calculate size for Table widgets

My children for GridList are containers which has columns of text and calendar like table. I can see that grid is squeezing text but does nothing to the table. I tied different itemWidths, same effect.
<img width="820" alt="image" src="https://user-images.githubusercontent.com/4585329/200660101-b2fc4488-e5df-4a2b-90fa-52524fb8024b.png">
