Inconsistency in Classic mod replay

[minhperry]

Type

Game behaviour

Bug description

For this score: https://osu.ppy.sh/scores/3752556524

The one buzz slider at around combo 881 if viewed normally will result in a sliderbreak (which is obviously a desync with the real score). However if i skip forward or backward with arrow keys, or ingame buttons, it sometimes still play it as normal.

Screenshots or videos

https://youtu.be/jIa4dpLG8Ew

Version

2024.1009.1

Logs

compressed-logs.zip

[ssz7-ch2]

Same issue as #27704 (comment) but for SliderRepeat

There's a SliderRepeat at 117111.20930232557 and replay frame at 117111
In stable, the SliderRepeat is truncated to 117111 so it counts as a hit.

In lazer, update does not check SliderRepeat until 117111.20930232557. But the cursor leaves the follow area at around
~117111.6
This means that in order for the SliderRepeat to count as a hit, update must check between 117111.20930232557 and ~117111.6

[minhperry]

This means that in order for the SliderRepeat to count as a hit, update must check between 117111.20930232557 and ~117111.6

So the inconsistency was caused by me skipping right within that timeframe?

[ssz7-ch2]

So the inconsistency was caused by me skipping right within that timeframe?

Yes

[frenzibyte]

Let's track this in #21659