These WPTs seem to be failing due to us apparently not handing CSS like this: repeat(auto-fill, 50px), or repeat(auto-fit, minmax(50px, 25px)) as the tests expect;

• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-fill-columns-001.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-fill-rows-001.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-fit-columns-001.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-fit-rows-001.html

These also seem potentially related:

• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-max-size-002.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-min-size-004.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-min-size-004.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-minmax.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-repeat-max-width-001.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-dynamic-001.html
• https://wpt.fyi/results/css/css-grid/grid-definition/grid-auto-repeat-dynamic-003.html *

• this one might also be related to aspect ratio issues, as in bug 1740236

I wonder if this is because of bug 1632578?