message: fix LongText tooltip regression
diff: @@ -13,10 +13,14 @@ const useStyles = makeStyles(theme =>
  whiteSpace: "pre-line",
  padding: theme.spacing(0.5, 0),
  - width: "100%",
  - height: "100%",
  display: "flex",
  alignItems: "center",
  +
  + position: "absolute",
  + top: 0,
  + bottom: 0,
  + right: theme.spacing(1.5),
  + left: theme.spacing(1.5),
  },
  text: { maxHeight: "100%" },
  