Hmm - we'll look into it. Definitely looks like it isn't hooked up to the S2S proxy properly.

Thanks for reporting this.

Added the additional details to 13660

Q1: The removed player is completely excluded from reward calculation, so if the deletion happens before the job runs, that player is never iterated over and receives no rank or rewards.
Q2: Yes, the modified score will be used. The job always reads live state. Note that whether the score actually gets modified depends on the leaderboard type (e.g., for the LOW_VALUE type, only updates if the new score is less than the existing)
Q3: No backfilling, the next joiner goes to the latest instance, not the freed spot in ^2. No loop over earlier instances (^1, ^2) ever happens. The next joiner goes to ^3 (or ^4 if ^3 is full). The freed spot in ^2 stays empty permanently.

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