Can someone confirm if IMDb Watchlist syncs well across browsers?

Hi! I’ve been managing my IMDb Watchlist across different devices, and I noticed that sometimes it doesn't stay updated when I switch between browsers — especially when I’m using apps like WhatsApp Web or YouTube in other tabs. Could this browser behavior impact IMDb syncing or session tracking? Just wondering if anyone else experienced this, or if it’s better to use the IMDb app instead of relying on browser access. Would appreciate any tips or recommendations from the community! Thanks in advance.