diff --git a/addons/mass_mailing/static/src/js/mass_mailing_widget.js b/addons/mass_mailing/static/src/js/mass_mailing_widget.js
index f604afe79a0..98c05789da5 100644
--- a/addons/mass_mailing/static/src/js/mass_mailing_widget.js
+++ b/addons/mass_mailing/static/src/js/mass_mailing_widget.js
@@ -454,6 +454,12 @@ var MassMailingFieldHtml = FieldHtml.extend({
 
         $selectTemplateBtn.on('click', () => {
             $snippetsSideBar.data('snippetMenu').activateCustomTab($themeSelector);
+            /**
+             * Ensure the parent of the theme selector is not used as parent for a
+             * tooltip as it is overflow auto and would result in the tooltip being
+             * hidden by the body of the mail.
+             */
+            $themeSelector.parent().addClass('o_forbidden_tooltip_parent');
             $selectTemplateBtn.addClass('active');
         });
 
diff --git a/addons/web_tour/static/src/js/tip.js b/addons/web_tour/static/src/js/tip.js
index 1e1a2cc0682..9d84557ee50 100644
--- a/addons/web_tour/static/src/js/tip.js
+++ b/addons/web_tour/static/src/js/tip.js
@@ -281,6 +281,7 @@ var Tip = Widget.extend({
         } while (
             $location.hasClass('dropdown-menu') ||
             $location.hasClass('o_notebook_headers') ||
+            $location.hasClass('o_forbidden_tooltip_parent') ||
             (
                 (o === "visible" || o.includes("hidden")) && // Possible case where the overflow = "hidden auto"
                 p !== "fixed" &&