diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -24,7 +24,7 @@
     'rsrc/css/aphront/error-view.css' => '9f1d5518',
     'rsrc/css/aphront/lightbox-attachment.css' => '7acac05d',
     'rsrc/css/aphront/list-filter-view.css' => '2ae43867',
-    'rsrc/css/aphront/multi-column.css' => '12f65921',
+    'rsrc/css/aphront/multi-column.css' => '667ca7b8',
     'rsrc/css/aphront/notification.css' => 'ef2c9b34',
     'rsrc/css/aphront/pager-view.css' => '2e3539af',
     'rsrc/css/aphront/panel-view.css' => '5846dfa2',
@@ -147,7 +147,7 @@
     'rsrc/css/phui/phui-text.css' => '23e9b4b7',
     'rsrc/css/phui/phui-timeline-view.css' => '15ff2a9f',
     'rsrc/css/phui/phui-workboard-view.css' => '84f2c272',
-    'rsrc/css/phui/phui-workpanel-view.css' => '97b69459',
+    'rsrc/css/phui/phui-workpanel-view.css' => 'b6ccc22d',
     'rsrc/css/sprite-actions.css' => '969ad0e5',
     'rsrc/css/sprite-apps-large.css' => '3e3ec4c3',
     'rsrc/css/sprite-apps-xlarge.css' => 'db66c878',
@@ -495,7 +495,7 @@
     'aphront-dialog-view-css' => 'c01d24b4',
     'aphront-error-view-css' => '9f1d5518',
     'aphront-list-filter-view-css' => '2ae43867',
-    'aphront-multi-column-view-css' => '12f65921',
+    'aphront-multi-column-view-css' => '667ca7b8',
     'aphront-pager-view-css' => '2e3539af',
     'aphront-panel-view-css' => '5846dfa2',
     'aphront-request-failure-view-css' => 'da14df31',
@@ -776,7 +776,7 @@
     'phui-text-css' => '23e9b4b7',
     'phui-timeline-view-css' => '15ff2a9f',
     'phui-workboard-view-css' => '84f2c272',
-    'phui-workpanel-view-css' => '97b69459',
+    'phui-workpanel-view-css' => 'b6ccc22d',
     'phuix-action-list-view' => 'b5c256b8',
     'phuix-action-view' => '19a0b148',
     'phuix-dropdown-menu' => 'bd4c8dca',
diff --git a/src/applications/project/controller/PhabricatorProjectBoardViewController.php b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
--- a/src/applications/project/controller/PhabricatorProjectBoardViewController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
@@ -89,7 +89,6 @@
 
     $board = id(new PHUIWorkboardView())
       ->setUser($viewer)
-      ->setFluidishLayout(true)
       ->setID($board_id);
 
     $this->initBehavior(
diff --git a/src/view/layout/AphrontMultiColumnView.php b/src/view/layout/AphrontMultiColumnView.php
--- a/src/view/layout/AphrontMultiColumnView.php
+++ b/src/view/layout/AphrontMultiColumnView.php
@@ -45,8 +45,11 @@
     $classes[] = 'aphront-multi-column-inner';
     $classes[] = 'grouped';
 
-    if (count($this->columns) > 7) {
-      throw new Exception("No more than 7 columns per view.");
+    if ($this->fluidishLayout || $this->fluidLayout) {
+      // we only support seven columns for now for fluid views; see T4054
+      if (count($this->columns) > 7) {
+        throw new Exception("No more than 7 columns per view.");
+      }
     }
 
     $classes[] = 'aphront-multi-column-'.count($this->columns).'-up';
diff --git a/webroot/rsrc/css/aphront/multi-column.css b/webroot/rsrc/css/aphront/multi-column.css
--- a/webroot/rsrc/css/aphront/multi-column.css
+++ b/webroot/rsrc/css/aphront/multi-column.css
@@ -28,7 +28,7 @@
 }
 
 .aphront-multi-column-fixed .aphront-multi-column-column-outer {
-  width: 300px;
+  width: 280px;
 }
 
 /* flexible, but with a minimum */
diff --git a/webroot/rsrc/css/phui/phui-workpanel-view.css b/webroot/rsrc/css/phui/phui-workpanel-view.css
--- a/webroot/rsrc/css/phui/phui-workpanel-view.css
+++ b/webroot/rsrc/css/phui/phui-workpanel-view.css
@@ -53,7 +53,7 @@
 }
 
 .aphront-multi-column-fixed .phui-workpanel-body {
-  width: 300px;
+  width: 280px;
 }
 
 .phui-workpanel-body .phui-object-item-list-view {