The following tests are failing in iOS but pass in Mac and GTK. imported/w3c/web-platform-tests/css/css-grid/grid-items/aspect-ratio-001.html imported/w3c/web-platform-tests/css/css-grid/grid-items/aspect-ratio-002.html imported/w3c/web-platform-tests/css/css-grid/grid-items/aspect-ratio-003.html imported/w3c/web-platform-tests/css/css-grid/grid-items/grid-item-inline-contribution-002.tentative.html imported/w3c/web-platform-tests/css/css-grid/grid-items/replaced-element-011.html imported/w3c/web-platform-tests/css/css-grid/grid-items/replaced-element-012.html imported/w3c/web-platform-tests/css/css-grid/grid-items/replaced-element-013.html It looks that they are aspect-ratio related tests.
<rdar://problem/79955935>
Looking at a couple of these, there's something slightly odd going on where it seems to paint slightly later than we expect. Running them locally they all appear to pass.
The following tests are failing in iOS imported/w3c/web-platform-tests/css/css-grid/grid-items/grid-item-inline-contribution-001.html imported/w3c/web-platform-tests/css/css-grid/grid-items/grid-item-inline-contribution-002.html (previously imported/w3c/web-platform-tests/css/css-grid/grid-items/grid-item-inline-contribution-002.tentative.html)