diff --git a/electrum/gui/qml/qetxfinalizer.py b/electrum/gui/qml/qetxfinalizer.py
index 1d09dcab9..e4114a88a 100644
--- a/electrum/gui/qml/qetxfinalizer.py
+++ b/electrum/gui/qml/qetxfinalizer.py
@@ -659,7 +659,7 @@ class QETxRbfFeeBumper(TxFeeSlider, TxMonMixin):
         super().__init__(parent)
 
         self._oldfee = QEAmount()
-        self._oldfee_rate = 0
+        self._oldfee_rate = '0'
         self._orig_tx = None
         self._rbf = True
         self._bump_method = BumpFeeStrategy.PRESERVE_PAYMENT.name
@@ -758,6 +758,13 @@ class QETxRbfFeeBumper(TxFeeSlider, TxMonMixin):
             self.validChanged.emit()
             self.warning = _("The new fee rate needs to be higher than the old fee rate.")
             return
+
+        if not self._orig_tx.add_info_from_wallet_and_network(wallet=self._wallet.wallet, show_error=self._logger.error):
+            self._valid = False
+            self.validChanged.emit()
+            self.warning = _("Transaction is missing info from network")
+            return
+
         try:
             self._tx = self._wallet.wallet.bump_fee(
                 tx=self._orig_tx,
@@ -793,7 +800,7 @@ class QETxCanceller(TxFeeSlider, TxMonMixin):
         super().__init__(parent)
 
         self._oldfee = QEAmount()
-        self._oldfee_rate = 0
+        self._oldfee_rate = '0'
         self._orig_tx = None
         self._txid = ''
         self._rbf = True
@@ -877,6 +884,12 @@ class QETxCanceller(TxFeeSlider, TxMonMixin):
             self.warning = messages.MSG_RELAYFEE
             return
 
+        if not self._orig_tx.add_info_from_wallet_and_network(wallet=self._wallet.wallet, show_error=self._logger.error):
+            self._valid = False
+            self.validChanged.emit()
+            self.warning = _("Transaction is missing info from network")
+            return
+
         try:
             self._tx = self._wallet.wallet.dscancel(
                 tx=self._orig_tx,
diff --git a/electrum/transaction.py b/electrum/transaction.py
index 82d11268e..94d40630d 100644
--- a/electrum/transaction.py
+++ b/electrum/transaction.py
@@ -1269,6 +1269,7 @@ class Transaction:
         timeout=None,
     ) -> None:
         """note: it is recommended to call add_info_from_wallet first, as this can save some network requests"""
+        from .interface import NetworkException
         if not self.is_missing_info_from_network():
             return
         if progress_cb is None:
@@ -1302,6 +1303,8 @@ class Transaction:
         except Exception as e:
             has_errored = True
             _logger.error(f"tx.add_info_from_network() got exc: {e!r}")
+            if isinstance(e, NetworkException) and not ignore_network_issues:
+                raise
         finally:
             has_finished = True
             progress_cb(TxinDataFetchProgress(num_tasks_done, num_tasks_total, has_errored, has_finished))