fix 100% progress bars not looking like 100% on smooth progress bars.

svelte-ui/src/components/Progress.svelte

@@ -87,8 +87,12 @@
 
 <div class="bar" title="{title}" class:thin class:thinner>
   {#if nonSegmented}
-    <div style="flex: {ons}" class={"non-segmented on " + onClass}></div>
-    <div style="flex: {offs}" class={"non-segmented off " + offClass}></div>
+    {#if ons > 0}
+      <div style="flex: {ons}" class={"non-segmented on " + onClass}></div>
+    {/if}
+    {#if offs > 0}
+      <div style="flex: {offs}" class={"non-segmented off " + offClass}></div>
+    {/if}
   {:else}
     {#each {length: ons} as _}
       <div class={"on " + onClass}></div>