YouTube is currently experimenting with server-side ad injection. This means that the ad is being added directly into the video stream.
This breaks sponsorblock since now all timestamps are offset by the ad times.
For now, I set up the server to detect when someone is submitting from a browser with this happening and rejecting the submission to prevent the database from getting filled with incorrect submissions.
There is quite a variety of services like that, curiosity stream is another one.
I guess NotJustBikes did a good job on advertising Nebula. Thanks for the recommendation, I’m in the mood for trying alternatives. I’m even in the mood to give Linux another go because of all the bullshit MS is pulling off again.