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…uping info endpoint The EventGroupingInfoEndpoint was mutating the class-level `initial_context` dict on StrategyConfiguration when setting `reverse_stacktraces`. Since `initial_context` is a class attribute (not instance), this mutation persisted across all subsequent uses of the same grouping config class, causing `reverse_when_serializing` to be set on stacktrace components and reversing frame order in grouping info snapshots. Fix: create an instance-level copy of `initial_context` before mutating it.
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Scope: Backend
This was referenced Feb 23, 2026
rbro112
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Feb 25, 2026
wedamija
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Feb 25, 2026
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Summary
Fixes #108776
Fixes #108878
Fixes #108923
Fixes #108929
Fixes #108971
Fixes #108984
Fixes #108985
Fixes #108987
Fixes #108999
EventGroupingInfoEndpoint.get()mutatesgrouping_config.initial_context["reverse_stacktraces"], butinitial_contextis a class-level dict onStrategyConfiguration, not an instance attribute. This mutation persists across all subsequent uses of the same grouping config class, causingreverse_when_serializingto be set on stacktrace components and reversing frame order in snapshot tests.initial_contextbefore mutating itTest plan