diff --git a/addons/website/static/tests/tours/website_style_edition.js b/addons/website/static/tests/tours/website_style_edition.js
index 35742e13520..cb54682cc9b 100644
--- a/addons/website/static/tests/tours/website_style_edition.js
+++ b/addons/website/static/tests/tours/website_style_edition.js
@@ -5,6 +5,13 @@ const wTourUtils = require("website.tour_utils");
 
 const TARGET_FONT_SIZE = 30;
 
+const checkFontSize = function (actions) {
+    const style = actions.tip_widget.el.ownerDocument.defaultView.getComputedStyle(this.$anchor[0]);
+    if (style.fontSize !== `${TARGET_FONT_SIZE}px`) {
+        console.error(`Expected the font-size to be equal to ${TARGET_FONT_SIZE}px but found ${style.fontSize} instead`);
+    }
+};
+
 wTourUtils.registerWebsitePreviewTour("website_style_edition", {
     test: true,
     url: '/',
@@ -17,19 +24,23 @@ wTourUtils.registerWebsitePreviewTour("website_style_edition", {
     content: "Change font size",
     trigger: '[data-variable="font-size-base"] input',
     run: `text_blur ${TARGET_FONT_SIZE}`,
-},
-...wTourUtils.clickOnSave(), {
+}, {
     content: "Check the font size was properly adapted",
+    trigger: 'iframe #wrapwrap',
+    // Waiting the CSS to be reloaded: the code adds a new assets bundle with
+    // a #t=... at the end then removes the old one.
+    extra_trigger: 'iframe html:not(:has(link[href$="web.assets_frontend.min.css"]))',
+    run: checkFontSize,
+},
+...wTourUtils.clickOnSave(),
+{
+    content: "Check the font size is still ok outside of edit mode",
     trigger: 'iframe body:not(.editor_enable) #wrapwrap',
-    run: function (actions) {
-        const style = actions.tip_widget.el.ownerDocument.defaultView.getComputedStyle(this.$anchor[0]);
-        if (style.fontSize !== `${TARGET_FONT_SIZE}px`) {
-            console.error(`Expected the font-size to be equal to ${TARGET_FONT_SIZE}px but found ${style.fontSize} instead`);
-        }
-    },
+    run: checkFontSize,
 },
 wTourUtils.clickOnEdit(),
-wTourUtils.goToTheme(), {
+wTourUtils.goToTheme(),
+{
     content: "Click on the Background Image selection",
     trigger: '[data-customize-body-bg-type="\'image\'"]:not(.active)',
     extra_trigger: '[data-customize-body-bg-type="NONE"].active',