Affected RUM metrics (non-exhaustive list):
Latency, request/response time are unaffected, ruling out a networking issue.
Looking at the platform dashboard, it's very clear that this is a mobile web-only regression.
Only visible for the Sweden article on WPR. Not for the other articles on WPR, nor on WPT:
Survey satisfaction ratios on mobile:
|Sep 17 (partial)||84.75%||87%|