Observatory grab-bag for 1.4 release.

runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html

Index: runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html
diff --git a/runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html b/runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html
index 21b89b255472b1aa1b3eec37c875e4e0600d40f4..984ce0622387cf7d2e87ee0d6b7c5771cd4ff5d0 100644
--- a/runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html
+++ b/runtime/bin/vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html
@@ -10,19 +10,27 @@
     .hover {
       position: fixed;
       z-index: 999;
+      height: 16px;
       width: 100%;
       background: #ffffff;
     }
+    .spacer {
+      height: 16px;
+      background-color: red;
+    }
   </style>
-  <nav-bar>
+  <nav-bar pad="{{ false }}">
     <top-nav-menu></top-nav-menu>
     <isolate-nav-menu isolate="{{ fragmentation.isolate }}"></isolate-nav-menu>
-    <nav-menu link="." anchor="heap map" last="{{ true }}"></nav-menu>
+    <nav-menu link="{{ fragmentation.isolate.relativeHashLink('heapmap') }}" anchor="heap map" last="{{ true }}"></nav-menu>
     <nav-refresh callback="{{ refresh }}"></nav-refresh>
   </nav-bar>
   <div class="hover">
     <p style="text-align:center">{{ status }}</p>
   </div>
+  <div class="spacer">
+    <!-- Make sure no data is covered by hover bar initially -->
+  </div>
   <div class="flex-row">
     <canvas id="fragmentation" width="1px" height="1px"></canvas>
   </div>