I just rolled back the recent update as it completely broke all of my layouts.
Where my layouts called for percentage widths, they completely changed to columns.
So 95% became 95 columns, 30% became 30 columns.
Resulting in a 1 wide, 95% layout of around 1300px wide grid-item collapsing down to more like 50px wide!
And a 3 wide, 30% layout of around 436px wide grid-items collapsing down to 3 50px wide or so items.
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I found the issue and fixed and update on repo, please try update version to