Bug between Android Edge, Android System WebView, and login to apps like McAfee and Ticketmaster

I apologize for the inconvenience you've experienced and appreciate your patience in trying the suggested steps. It's unfortunate that the issue persists despite our efforts.
Regarding escalating the issue to the Microsoft development team, the best course of action would be to provide feedback directly to the Microsoft Edge team. Here's how you can do it:

1. Open Microsoft Edge on your Samsung Galaxy S21 FE 5G.
2. Tap the three-dot menu button in the lower-right corner.
3. Go to "Settings" and scroll down to find the "Help and feedback" section.
4. Tap on "Send feedback" or "Report an issue."
5. Provide a detailed description of the problem you're facing, mentioning that the issue occurs specifically when using WebView with the Ticketmaster app and selecting the "stay in Microsoft Edge" option.
6. Include any relevant information such as device details, Android OS version, and steps to reproduce the issue.
7. Submit the feedback and wait for a response from the Microsoft Edge team.

By providing feedback through the official channels, you can ensure that the information reaches the appropriate team for investigation and resolution.
In the meantime, I recommend reaching out to the Ticketmaster app developers as well, explaining the situation and the specific behavior you're encountering. They may be able to provide further insights or offer specific troubleshooting steps or updates related to their app's compatibility with Microsoft Edge WebView.
I understand that you're a professional web/app developer, and it's frustrating when support options seem limited. Exploring these avenues for feedback and contacting the respective app developers are the best ways to communicate your concerns to the relevant teams who can further investigate and address the issue.
If there's anything else I can assist you with or if you have further questions, please let me know.