Semantic-ui: "Middle aligned" can not make grid vertically center anymore

[129emma]

I was trying to use ui middle aligned grid to make grid vertically center. However, even I totally copy code from the website https://semantic-ui.com/collections/grid.html#vertical-alignment2 . It still not working. Please see the example https://jsfiddle.net/whp895vb/5 .
I used this last year and it worked very well, I don't know why this attribute doesn't work anymore.

Thank you.

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[Bdthomson]

I have noticed the same issue.

[shahyash1993]

Still the issue is present.