Issue
My project's Inbound Filters are default/empty yet the graph shows many events "Filtered by Error message".
Applies To
Any Sentry User
Symptoms
I haven't set any Custom Filters in "Error Messages" field but I see events being listed as "Filtered by error message" in the chart.
Resolution
If the default setting's for "Filter out hydration errors" or "Filter out ChunkLoadError(s)" are set in the project (default == enabled) this will contribute to the "filtered by error message" reason in the chart on the inbound filters page.
For reference, these filters appear in their default state in UI as pictured below:
It is not possible to disambiguate the number of events filtered out by Custom Filters by Error Message, filtered out hydration errors and filtered out ChunkLoadError(s).