Functional bridges without ratio

Some relays operators are starting to notice that we publish the bandwidth ratio from onbasca in their status page, and asking why some bridges have it and some don't. Triggered by that I added to grafana a visualization of how many bridges are functional by bridgestrap but untested by onbasca. Out of 1914 obfs4 bridges 289 are in that state, so 15% of obfs4 bridges.

It looks like onbasca is failing to test those 15% of bridges.

Let me know if you need logs or something to help you debugging this problem.