Hide pending transactions for accounts with missing historical txs

src/app/state/account/selectors.ts

@@ -26,6 +26,11 @@ export const selectPendingTransactionForAccount = createSelector(
 export const hasAccountUnknownPendingTransactions = createSelector(
   [selectAccountNonce, selectTransactions, selectAccountAddress],
   (accountNonce, transactions, accountAddress) => {
+    if (!transactions.length && accountNonce && process.env.REACT_APP_BACKEND === 'oasisscanV2') {
+      // Don't bother when tx list is empty in this case. Oasis Scan v2 API is missing historical data.
+      // Account have nonce and 0 transactions due to last correctly indexed block 16817956 (2023-11-29)
+      return false
+    }
     const noncesFromTxs = transactions
       .filter(tx => !tx.runtimeId)
       .filter(tx => tx.from !== undefined)
@@ -36,6 +41,8 @@ export const hasAccountUnknownPendingTransactions = createSelector(
     if (noncesFromTxs.length <= 0) {
       // TODO: last transaction that affected nonce is not in the initial page of account's transactions
       if (transactions.length >= TRANSACTIONS_LIMIT) return false
+      // if we cannot find any noncesFromTxs this probably means that account is missing some part of historical data
+      if (!noncesFromTxs.length && process.env.REACT_APP_BACKEND === 'oasisscanV2') return false
       // Waiting for first transactions
       return BigInt(accountNonce) > 0n
     }