TableView inside of a CollectionView cell does not draw on row deletion.

Ok, the setup for this is pretty complex. I'm doing maintenance on an app I did not write. The view structure is as follows:

At the base you have a UICollectionViewController. Each UICollectionViewCell has an assigned UIViewController within it. Each of these controllers is attached to the view hierarchy as a child view controller. The main view of one of these child controllers is a UITableView/UIViewController pair.

Everything seems to be hooked up properly and working well except for one case. Assuming the table-view has more than two rows, If I swipe-left to delete the second row (IndexPath 0,1), the content or row one (IndexPath 0,0) goes blank. I can see the disclosure accessory view but the two UILabels up and disappear. If I tap on the blank row the tap behavior is still intact. If I refresh the table-view, the missing content appears as it should.

To make things a little more interesting, this table-view is implement using RxSwift. Here is the code:

Code Block 
private func bind() {
        // Cell for row at index path.
        let curriedArgument: (Int, Assignment, AssessmentTableViewCell) -> Void = { /* rowIndex */_, model, cell in
            cell.assignment = model
        }
        let observer: Observable<[Assignment]>
        // For the widget version of this controller, only display the first N
        // items in a table-view that does not scroll. If more than N items exist
        // the user must tap the `More` view. For the non-widget view, show all
        // available items in a scrolling table-view.
        if isWidget {
            tableView.isScrollEnabled = false
            observer = viewModel
                .assignments
                .asObservable()
                .map({ Array($0.prefix(CPAssignmentWidgetVC.numberOfItemsToDisplay))})
        } else {
            observer = viewModel
                .assignments
                .asObservable()
        }
        observer
            .distinctUntilChanged()
            .bind(to: tableView.rx.items(cellIdentifier: "AssessmentCell"), curriedArgument: curriedArgument)
            .disposed(by: disposeBag)
        // When something changes, update both the widget and the modal view as
        // needed.
        if isWidget {
            Observable
                .combineLatest(viewModel.fetching.asObservable(),
                               viewModel.assignments.asObservable())
                .subscribe(onNext: { [weak self] (isFetching, assignments) in
                    self?.updateFooter(with: assignments, isFetching: isFetching)
                })
                .disposed(by: disposeBag)
        } else {
            viewModel.fetching.asObservable()
                .distinctUntilChanged()
                .debounce(.milliseconds(500), scheduler: MainScheduler.instance)
                .subscribe(onNext: { isFetching in
                    if isFetching {
                        SVProgressHUD.show()
                    } else {
                        SVProgressHUD.dismiss()
                    }
                })
                .disposed(by: disposeBag)
        }
        // Select cell
        tableView
            .rx
            .itemSelected
            .subscribe(onNext: { [unowned self] indexPath in
                self.tableView.deselectRow(at: indexPath, animated: true)
                guard
                    let cell = tableView.cellForRow(at: indexPath) as? AssessmentTableViewCell,
                    let assignment = cell.assignment else { return }
                if cell.assignmentResult != nil {
                    presentOptions(cell)
                } else {
                    guard let patient = patient, patient.hasPermissionToModify(permissionType: .assessments) else {
                        let title = NSLocalizedString("We're sorry!", comment: "Notification error title")
                        let message = NSLocalizedString("You don't have permission to complete this survey", comment: "Notification error message")
                        let dismiss = NSLocalizedString("Dismiss", comment: "Button title")
                        LHDNotification.show(with: title, text: message, type: .error).setDismissButtonTitle(dismiss)
                        return
                    }
                    presentAssignmentEntryForm(assignment)
                }
            })
            .disposed(by: disposeBag)
        // Delete cell (remove associated backing model value)
        tableView
            .rx
            .itemDeleted
            .subscribe(onNext: { indexPath in
                self.viewModel.remove(at: indexPath.row)
            })
            .disposed(by: disposeBag)
        // Display last cell
        tableView
            .rx
            .willDisplayCell
            .subscribe(onNext: { [unowned self] (/* cell */_, indexPath) in
                if indexPath.item + 1 == self.viewModel.numberOfItems {
                    self.viewModel.loadMore()
                }
            })
            .disposed(by: disposeBag)
    }
}

Question: Why is the first row content being wiped out? Assuming no one can know the answer to this I have a follow-up question. How can I get the contents of the entire tableview to redraw themselves after a successful delete? I would have assumed the binding to the table-view on line 27 would handle this automatically when the view-model updates.