Yes. If you notice within the App Store Distribution & Marketing / App Review section on this forum, there have been a lot of similar cases with recent activity. My beta app is also stuck in review for 15 days. Hope Apple corrects the issue soon. Fingers crossed.

Yes, same here. Submitted TestFlight external test (beta) app builds on Feb 09. The macOS build was approved Feb 11. The iOS build is still waiting for review. I upped the build number once, no dice. I requested a support ticket (email), no response. I had them call me. To their credit they called immediately. Explained the situation. The lady said she sent an 'expedite review request' to the review team. As a first time indie developer (first app), I am so excited to get my creation out there, and so distressed at this friction before I can even have beta testers test it. 24 hours after the alleged 'expedited review request', still waiting.