diff --git a/service.js b/service.js
index 9a6d4ba..ae3e7a6 100644
--- a/service.js
+++ b/service.js
@@ -879,6 +879,7 @@ class BesService {
     this.disableMutationObserver()
     const styles = window.getComputedStyle(this.hostElement)
     const hostRect = this.hostElement.getBoundingClientRect()
+    // Sync margins one by one. Firefox is not happy when syncing all at once.
     this.correctionPanel.style.marginLeft = styles.marginLeft
     this.correctionPanel.style.marginTop = styles.marginTop
     this.correctionPanel.style.marginRight = styles.marginRight