Visual problems with Datatable actions

The actions on the search page results table are visually acting weirdly. There is a new white background that blocks the underlying row highlight and also the layering is broken (tooltip of row n is lower on the z-index than row n+1).

The following CSS is causing this in Datatable.js:

  rowActionsCell: {
    textAlign: 'right',
    width: 1,
    whiteSpace: 'nowrap',
    paddingTop: 0,
    paddingBottom: 0
    position: 'sticky',       <-- This causes the issue with incorrect layering
    right: 0,
    zIndex: 1,
    backgroundColor: 'white'  <-- This causes the issue with blocking white background
  },