@Robin Becker Thank you for sharing this unexpected behavior with us. We apologize for the frustration that this issue caused you.
This particular issue would require gathering an .har file, which could contain sensitive information not appropriate for a community forum or email. As a result, we would like to provide you a free technical support case so you can work one on one with a support engineer to securely share the repro of the issue.
Can you please send an email to azcommunity@microsoft.com with the title ATTN: Bryan? Please include your Azure subscription ID in the email as we'll need this to assign the free support case to your subscription.
We look forward to your reply.