Quick answer: Bugs that affect 5% of players are hard to diagnose. A feature-flagged rollout that gradually enables a fix lets you measure impact on the bug rate.
Feature flags are usually framed as features. Use them for debugging too; the rollout is the experiment.
Roll out the fix 1%/10%/50%/100%
Each tier waits 24 hours; bug rate compared to unflagged baseline. The fix earns its rollout.
Per-flag bug-rate tracking
Crash dashboard segments by flag value. Decreased rate in the flagged cohort = fix is working.
Rollback path
Server-side flag flip rolls back instantly. No app update; no player impact beyond the flip.
Sunset flags promptly
After 100% rollout, remove the flag in next release. Keeping it forever accumulates tech debt.
“Flag-gated rollouts are an experimental approach to debugging.”
If your studio doesn't have feature flags, the case for adding them is part bug debugging, part feature rollout. Both pay back.