block fixes

ui/block/BlockDetails.tsx

@@ -207,7 +207,7 @@ const BlockDetails = () => {
           </Tooltip>
         ) }
       </DetailsInfoItem>
-      { data.priority_fee && (
+      { data.priority_fee !== null && data.priority_fee > 0 && (
         <DetailsInfoItem
           title="Priority fee / Tip"
           hint="User-defined tips sent to validator for transaction priority/inclusion."

ui/shared/Utilization.tsx

@@ -11,7 +11,7 @@ interface Props {
 const WIDTH = 50;
 
 const Utilization = ({ className, value, colorScheme = 'green' }: Props) => {
-  const valueString = (clamp(value * 100, 0, 100)).toLocaleString('en', { maximumFractionDigits: 2 }) + '%';
+  const valueString = (clamp(value * 100 || 0, 0, 100)).toLocaleString('en', { maximumFractionDigits: 2 }) + '%';
   const colorGrayScheme = useColorModeValue('gray.500', 'gray.500');
   const color = colorScheme === 'gray' ? colorGrayScheme : 'green.500';