Fixed mobile layout

lib/domains/account/account_bloc.dart

@@ -202,7 +202,11 @@ class AccountBloc extends Bloc<AccountEvent, AccountState> {
       accountFound.color = accountToSave.color;
       accountFound.saving = accountToSave.saving;
     } catch (e) {
-      accounts.add(accountToSave);
+      if (accounts.isEmpty) {
+        accounts = [accountToSave];
+      } else {
+        accounts.add(accountToSave);
+      }
     }
 
     await _metadataRepository.saveAccounts(accounts);