Troubleshooting Tab Auto-Change Issue in Webflow Header 103

Hi everyone, I'm using Header 103 (preview link) in a Webflow project for a client (live site). However, I'm experiencing an issue where the tabs should auto-change after a few seconds as the progress bar fills up—but this doesn't always happen consistently. What's strange is that it seems to work fine in a private browser, so I'm unsure what might be causing the inconsistency. Since I come from a design background and don't have a strong coding knowledge, I’m not entirely sure how to troubleshoot or fix this. If anyone has insights or can point me in the right direction, I’d really appreciate it! Thanks in advance!