Scores are sometimes displayed as 0

[isuewo]

Type

Other

Bug description

This is the second time I've encountered this bug and I honestly don't know how to consistently reproduce it, but sometimes it just happens

Screenshots or videos

I don't know why the video is corrupted, but downloading and then opening it should work:

output.mp4

Version

2022.723.0-lazer

Logs

database.log
performance.log
network.log
runtime.log

[smoogipoo]

I thought there was another similar issue duplicating this (not #18824).

The working theory is that difficulty calculation is being cancelled, which caches null values to the cache. Still investigating...

[smoogipoo]

As it turns out, BeatmapDifficultyCache already doesn't cache null values (i.e. from cancelled calculations):

osu/osu.Game/Beatmaps/BeatmapDifficultyCache.cs

Line 149 in 1d48cee

protected override bool CacheNullValues => false;

So back to the drawing board with this one. The above PR adds a bit of logging but I don't believe it'll be too useful here.

[peppy]

This will also be resolved with the direction we're taking (adding extra statistical data as per #19380 to avoid requiring beatmap difficulty calculation for score computation).

[peppy]

Will track via #19519.