The details on a article history page should be sortable by name, size, date, ...
Thanks for taking the time to report this! (It's welcome to associate projects to tasks; also see https://www.mediawiki.org/wiki/How_to_report_a_bug )
What is the actual problem that you would like to solve? Why do you want to sort?
I'm also wondering if this could be merged into T18619: Add filters to history page.