diff --git a/frontend/resources/styles/main/partials/sidebar-document-history.scss b/frontend/resources/styles/main/partials/sidebar-document-history.scss
index f7fc042886..02d786450b 100644
--- a/frontend/resources/styles/main/partials/sidebar-document-history.scss
+++ b/frontend/resources/styles/main/partials/sidebar-document-history.scss
@@ -4,6 +4,16 @@
 //
 // Copyright (c) KALEIDOS INC
 
+.history-debug-overlay {
+  background: $color-gray-50;
+  bottom: 0;
+  max-height: 500px;
+  overflow-y: auto;
+  position: absolute;
+  width: 500px;
+  z-index: 1000;
+}
+
 .history-toolbox {
   display: flex;
   flex-direction: column;
diff --git a/frontend/src/app/main/data/workspace.cljs b/frontend/src/app/main/data/workspace.cljs
index 6ce0e0e0be..2dca29d370 100644
--- a/frontend/src/app/main/data/workspace.cljs
+++ b/frontend/src/app/main/data/workspace.cljs
@@ -1969,3 +1969,6 @@
 (dm/export dwv/update-viewport-size)
 (dm/export dwv/start-panning)
 (dm/export dwv/finish-panning)
+
+;; Undo
+(dm/export dwu/reinitialize-undo)
diff --git a/frontend/src/app/main/ui/workspace.cljs b/frontend/src/app/main/ui/workspace.cljs
index 93193089c6..8aba4efbb1 100644
--- a/frontend/src/app/main/ui/workspace.cljs
+++ b/frontend/src/app/main/ui/workspace.cljs
@@ -27,6 +27,7 @@
    [app.main.ui.workspace.libraries]
    [app.main.ui.workspace.nudge]
    [app.main.ui.workspace.sidebar :refer [left-sidebar right-sidebar]]
+   [app.main.ui.workspace.sidebar.history :refer [history-toolbox]]
    [app.main.ui.workspace.textpalette :refer [textpalette]]
    [app.main.ui.workspace.viewport :refer [viewport]]
    [app.util.dom :as dom]
@@ -72,6 +73,10 @@
        (when (debug? :coordinates)
          [:& coordinates/coordinates {:colorpalette? colorpalette?}])
 
+       (when (debug? :history-overlay)
+         [:div.history-debug-overlay
+          [:button {:on-click #(st/emit! dw/reinitialize-undo)} "CLEAR"]
+          [:& history-toolbox]])
        [:& viewport {:file file
                      :wlocal wlocal
                      :wglobal wglobal