Steps to reproduce

1.  Build custom widget
2.  Select Google Data supplier
3. Fill in dimension/metric for first series
4. Add series
5. Don't select any data for new series
6. Click "Add to dashboard"

Another step to reproduce:

1. Click "Add widget"
2. Select Google Data supplier
3. Click "Add to dashboard", the form validation show up
4. Click "Build custom widget"
5. Click "Add to dashboard"

.. Logs, screenshots, gifs...

Expected results

Show "This field is required"

Actual results

New widget added to the dashboard with wrong value

Workaround

Development notes

Only happen with UI version 6.2.2

Should check for all data suppliers: Google, Adobe, Matomo

Should re-test with version 6.2.2 and upper 6.2.3