Unable to delete version range history form Main.WebHome or its copies

Steps to reproduce:

• on Main.WebHome add some comment, attachments, annotations, or add more contend in order to get some versions of the page
• go to the history tab and select a range and try to delete that history range

It doesn't work, the page refreshed but that's it.

If you copy Main.WebHome to Main.WebHome2, you will get the same behavior.

If you copy the content of Main.WebHome (the dashboard line) into a page created by you, and add some versions, deleting the range works.

Note that deleting a individual history version works on Main.WebHome.