Updated on 2026-08-14

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/state/SendUiState.kt

@@ -77,6 +77,7 @@ internal sealed class SendStates {
         val rate: BigDecimal?,
         val appCurrency: AppCurrency,
         val isFeeApproximate: Boolean,
+        val isCustomSelected: Boolean,
         val notifications: ImmutableList<SendNotification>,
     ) : SendStates()
 

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/state/fee/FeeStateFactory.kt

@@ -56,18 +56,26 @@ internal class FeeStateFactory(
     fun onFeeOnLoadedState(fees: TransactionFee): SendUiState {
         val state = currentStateProvider()
         val feeState = state.feeState ?: return state
-        val feeSelectorState = (feeState.feeSelectorState as? FeeSelectorState.Content)?.copy(
+        val feeSelectorState = feeState.feeSelectorState as? FeeSelectorState.Content
+
+        val isCustomWasSelected = if (feeState.isCustomSelected) {
+            feeSelectorState?.customValues ?: persistentListOf()
+        } else {
+            customFeeFieldConverter.convert(fees.normal)
+        }
+        val updatedFeeSelectorState = feeSelectorState?.copy(
             fees = fees,
+            customValues = isCustomWasSelected,
         ) ?: FeeSelectorState.Content(
             fees = fees,
             customValues = customFeeFieldConverter.convert(fees.normal),
         )
 
-        val fee = feeConverter.convert(feeSelectorState)
+        val fee = feeConverter.convert(updatedFeeSelectorState)
         return state.copy(
             amountState = state.amountState?.copy(isFeeLoading = false),
             feeState = feeState.copy(
-                feeSelectorState = feeSelectorState,
+                feeSelectorState = updatedFeeSelectorState,
                 fee = fee,
                 isFeeApproximate = isFeeApproximate(fee),
             ),
@@ -91,9 +99,11 @@ internal class FeeStateFactory(
 
         val updatedFeeSelectorState = feeSelectorState.copy(selectedFee = feeType)
         val fee = feeConverter.convert(updatedFeeSelectorState)
+        val isCustomFeeWasSelected = feeState.isCustomSelected || updatedFeeSelectorState.selectedFee == FeeType.Custom
         return state.copy(
             feeState = feeState.copy(
                 fee = fee,
+                isCustomSelected = isCustomFeeWasSelected,
                 feeSelectorState = updatedFeeSelectorState,
             ),
         )

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/state/fee/SendFeeStateConverter.kt

@@ -20,6 +20,7 @@ internal class SendFeeStateConverter(
             rate = feeCryptoCurrencyStatusProvider().value.fiatRate,
             appCurrency = appCurrencyProvider(),
             isFeeApproximate = false,
+            isCustomSelected = false,
         )
     }
 }

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/state/previewdata/FeeStatePreviewData.kt

@@ -48,6 +48,7 @@ internal object FeeStatePreviewData {
         ),
         isFeeApproximate = false,
         notifications = persistentListOf(),
+        isCustomSelected = false,
     )
 
     val errorFeeState = feeState.copy(