Steps to reproduce:

1. Go to https://qa.moodledemo.net/question/edit.php?courseid=2
2. Edit one of the questions.
3. Click 'Save changes and continue editing a few times, to make a few versions, Then 'Save changes' to leave the form.
4. Go to the History page for the question you edited.
5. Select some of the versions, and do With selected -> Delete.

Actual result:

Expected result:
The things to be delete should be like

• Moodle activities (v2)
• Moodle activities (v3)
• Moodle activities (v7)