When adding rows dynamically to a grid in Google Chrome 78 the checkboxes are not centered.  Rows 2-4 are dynamically added, 1 is not. Checking the boxes fixes the positioning. A similar issue can be seen when scrolling the checkable grids in the demo https://material-theme-demo.herokuapp.com/#!grids It may be is realted to this Chrome Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1001438