Hi, I added a blink features to be tracked via UseCounters in Chromium a few months ago, and there is usage data in Chrome Status pages (0.6%): CrossBrowsingContextGroupMainFrameNulledNonEmptyNameAccessed.
However, the query result it empty when I try to query it from the httparchive.blink_features.usage table.
I think this is a different issue from How to get new/recent features added to the blink_features.usage table? because I can see this featured in the internal/support/trace_parser.py (wptagent/trace_parser.py at e0152a9094813276594426fb4fb82a58ed3d4e1a · WPO-Foundation/wptagent · GitHub) and it’s been available in Chrome stable since M86 (since Oct. 2020).
Does anyone know why is that?