Bug 1605939 - allow downloads view to scroll by not enclosing it in a stack that sizes to match the view size, r=ntim

Differential Revision: https://phabricator.services.mozilla.com/D58220

--HG--
extra : moz-landing-system : lando

browser/components/downloads/content/contentAreaDownloadsView.css

@@ -2,11 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#downloadsListEmptyDescription {
+#downloadsRichListBox:not(:empty) + #downloadsListEmptyDescription,
+#downloadsRichListBox:empty {
   display: none;
-  pointer-events: none;
-}
-
-#downloadsRichListBox:empty + #downloadsListEmptyDescription {
-  display: -moz-box;
 }

browser/components/downloads/content/contentAreaDownloadsView.xhtml

@@ -39,14 +39,12 @@
   </keyset>
 #endif
 
-  <stack flex="1">
-    <richlistbox flex="1"
-                 seltype="multiple"
-                 id="downloadsRichListBox"
-                 context="downloadsContextMenu"/>
-    <description id="downloadsListEmptyDescription"
-                 value="&downloadsListEmpty.label;"/>
-  </stack>
+  <richlistbox flex="1"
+               seltype="multiple"
+               id="downloadsRichListBox"
+               context="downloadsContextMenu"/>
+  <description id="downloadsListEmptyDescription"
+               value="&downloadsListEmpty.label;"/>
 #include downloadsCommands.inc.xhtml
 #include downloadsStrings.inc.xhtml
 #include downloadsContextMenu.inc.xhtml