Add a banner like in the invoice editor demo.

When clicking + Add credit card transaction, there should be some indication that it can be edited. Maybe focusing the row after the button click is enough. On mobile this is maybe more critical since the double tap to edit is not necessarily apparent to the user.

"Invoice editor demo" screenshot ->
https://demo.vaadin.com/invoice-editor-app/

"Customer CRUD demo" screenshot ->
https://demo.vaadin.com/customer-crud-app/

Bump the dependency of the vaadin-grip-pro-flow once the new release (1.0.1) is available. It will include the fix from the wc: vaadin/vaadin-grid-pro@68c4824.
Set keepEditorOpen on GridPro

Add Add credit card transaction button functionality to flow example.

Align Flow example to reflect the structure of Polymer example.

Currently Price and VAT columns are sorted as strings

It would be more convenient to try out the Customer CRUD if there were fewer required fields in the form. Maybe mark as required only the ones visible in the Grid: Company Name, Contact Person, and Phone.

There should be a clear notification preferably in the center of the screen:

This is a UI demo

The current notifications are misleading.

Currently the dependencies are not up-to-date:

Let's use the same code as we have in CRUD:

"vaadin": "vaadin/vaadin#^14.0.0-beta3"