diff --git a/main.js b/main.js
index 18c0be34..6167a2a5 100644
--- a/main.js
+++ b/main.js
@@ -450,7 +450,7 @@ function invokeActiveZooming() {
       const size = this.getAttribute("font-size") * scale;
       const hidden = hideEmblems.checked && (size < 25 || size > 300);
       if (hidden) this.classList.add("hidden"); else this.classList.remove("hidden");
-      if (!hidden && COArenderer && this.children.length && !this.children[0].getAttribute("href")) renderGroupCOAs(this);
+      if (!hidden && window.COArenderer && this.children.length && !this.children[0].getAttribute("href")) renderGroupCOAs(this);
     });
   }
 
diff --git a/modules/coa-generator.js b/modules/coa-generator.js
index 4064704b..5dbdc6dc 100644
--- a/modules/coa-generator.js
+++ b/modules/coa-generator.js
@@ -195,6 +195,10 @@
     if (parent === "custom") parent = null;
     let usedPattern = null, usedTinctures = [];
 
+    // TO-DO
+    // test in FF
+    // stringify COA on save?
+
     const t1 = P(kinship) ? parent.t1 : getTincture("field");
     if (t1.includes("-")) usedPattern = t1;
     const coa = {t1};
diff --git a/modules/ui/style.js b/modules/ui/style.js
index c26b0b4c..35aaa29d 100644
--- a/modules/ui/style.js
+++ b/modules/ui/style.js
@@ -709,7 +709,7 @@ function applyStyleOnLoad() {
     stylePreset.value = preset;
     stylePreset.dataset.old = preset;
   } else {
-    preset && ERROR && console.error(`Style preset ${preset} is not available in localStorage, applying default style`);
+    if (preset !== "styleDefault" && ERROR) console.error(`Style preset ${preset} is not available in localStorage, applying default style`);
     stylePreset.value = "styleDefault";
     stylePreset.dataset.old = preset;
     applyDefaultStyle();