Error on action with multiple event names filter for Find participants search

Same problem described at Email - schedule/send via CiviMail" with multiple event names filter but for Find participants search.

Steps to reproduce

1. Go to Events > Find participants

2. Select two events on Event Name field and click to Search button

3. Select All records and click Actions button

4. Click on Group - create smart group

5. Enter a name in the Name field

6. Click Save Smart Group

7. An error screen appears with a message like

   3,2 is not of the type Int

Reported at SE How do you create a Smart Group with participants from multiple events