contexts/WalletContext.tsx — signTx:
const globalAbortCleanup = () => { operationAbortController.abort(); };
abortControllerRef.current?.signal.addEventListener('abort', globalAbortCleanup, { once: true });{ once: true } removes the listener only if abort actually fires. On the normal path (sign succeeds, no disconnect) the listener is never removed, and abortControllerRef.current persists for the whole connected session (it's only replaced on disconnect).
Impact
Every signTx call permanently adds a listener to the session-long AbortController. A user who signs many transactions in one session accumulates hundreds of dead closures (each retaining an AbortController + closure scope) until they disconnect. Slow leak; matches the class of #234 / #275 / #355.
Suggested fix
Remove the listener in a finally (or signal.removeEventListener) once the operation settles.
contexts/WalletContext.tsx—signTx:{ once: true }removes the listener only ifabortactually fires. On the normal path (sign succeeds, no disconnect) the listener is never removed, andabortControllerRef.currentpersists for the whole connected session (it's only replaced ondisconnect).Impact
Every
signTxcall permanently adds a listener to the session-long AbortController. A user who signs many transactions in one session accumulates hundreds of dead closures (each retaining anAbortController+ closure scope) until they disconnect. Slow leak; matches the class of #234 / #275 / #355.Suggested fix
Remove the listener in a
finally(orsignal.removeEventListener) once the operation settles.