Special:History is designed for mobile browsers. When using a desktop browser, however, Special:History shows the #ifeq parser function logic with for revisions that have had the username revdel'd. This happens regardless of whether the mobile site is requested (i.e., en.m.wikipedia.org/wiki/Special:History/ and en.wikipedia.org/wiki/Special:History/).

You can see an this in the December 4th edits at https://en.m.wikipedia.org/wiki/Special:History/Talk:Twitter and https://en.wikipedia.org/wiki/Special:History/Talk:Twitter

The text shown is: {{#ifeq:{{FULLPAGENAME}}|Special:Contributions| [Username or IP has been suppressed for this edit. As an oversighter you can still see the edit in the user's contributions]|(Username or IP removed)}}

Additionally, while the issue happens for suppressed user names as well, that logic is shown for user names that have been revision deleted only and not suppressed from sysop view.