apollo-client: Mutations failures optional rollbackOptimistic

I am creating a chat app. I receive new messages by subscriptions. I submit new messages by mutations (apollo http).

Intended outcome: Mutations optimistic updates to be rollback optionally. I want to let people now the message failed, and later give them the option to “resend” (or even automatically retry to resend when back online, this latter not that important in apollo-http).

Actual outcome: When apollo http server goes offline (fail for some reason), mutations fail. Optimistic updates happen but as soon as it realizes the network failed they are rolled back. Mutation’s optimistic updates are rollback by design. So the message vanishes.

How to reproduce the issue:

        optimisticResponse: {
          __typename: 'Mutation',
          messageNew: {
            __typename: 'Message',
            id: -generateId(),
            completed: false,
            createdBy: { 
              __typename: 'User',
              username: myUser.username,
              id: myUser.id

            },
            createdAt: +new Date,
            text
          }
        },  
        updateQueries: {
          MessagesForChannelQuery: (previousResult, args) => {
            return {
              ...previousResult,
              messagesForChannel: [
                ...previousResult.messagesForChannel,
                args.mutationResult.data.messageNew
              ]
            }
          }
        }