How do you reproduce an intermittent race condition in an async event handler?

[JosephW]

I’ve been trying to debug a weird issue where my app’s state gets corrupted only after a specific sequence of user actions, and I finally tracked it down to a race condition in my event handler. The problem is, I can’t reliably reproduce it to write a proper test—it seems to depend on the exact timing of some async callbacks. Has anyone else dealt with something this intermittent?

[Ella.W]

I bumped into something similar and it felt like a timing edge where a state flag got read at the wrong moment. I started logging when handlers ran and what values went into them and watched how the interleavings showed up only sometimes. It was exhausting to chase until I admitted timing mattered more than the code

[Joshua_M]

I built a tiny harness that shuffles the order of callbacks and tosses in small random sleeps to stress the scheduler. It helped reveal some flaky paths but I still could not reliably reproduce the original bug. The test would pass sometimes and fail other times with no clear pattern

[Sofia_W]

Maybe the issue is not the race in the handler but how the data gets into that handler in the first place. I once had a chain where a cached value was stale after a refresh and I blamed a race while the real problem was in how data was updated elsewhere. It might be worth tracing that flow a step before the event fires

[Andrew_M]

Do you think the race is the real root cause or could there be another missing piece feeding into the event