When integrating Google Tag Manager (GTM) with an Angular application, the issue of the active page not updating correctly while navigating between routes can arise.
GTM is typically set up to detect page views based on traditional page loads, which can lead to discrepancies in single-page applications like Angular apps where page reloads do not occur.
To address this issue, steps include ensuring proper GTM configuration by adding the GTM container script and implementing Angular routing events to track page changes accurately without requiring page refresh.
Testing the implementation using Google Tag Manager's Preview Mode or Realtime Overview allows verification of the active page updates without the need for manual refreshes.