diff --git a/addons/web_editor/static/src/js/editor/snippets.options.js b/addons/web_editor/static/src/js/editor/snippets.options.js
index 07f1a9af8e5..15429cf3cf6 100644
--- a/addons/web_editor/static/src/js/editor/snippets.options.js
+++ b/addons/web_editor/static/src/js/editor/snippets.options.js
@@ -2224,6 +2224,9 @@ registry.sizing = SnippetOptionWidget.extend({
         this.$handles.on('mousedown', function (ev) {
             ev.preventDefault();
 
+            // First update size values as some element sizes may not have been
+            // initialized on option start (hidden slides, etc)
+            resizeValues = self._getSize();
             var $handle = $(ev.currentTarget);
 
             var compass = false;