Customise Purge Cache always returns user to Styles page

When using the Purge Cache link in the Customise tab, you are returned back to the Styles management page, although the confirm dialog says, Back To Previous Page.

We should be returned to the actual previous page, not forced back to the styles page. It's possible to trigger it from the Extensions and Language pack pages.

Or just remove it (appears to be a leftover from when editing style templates inside the ACP was a thing)