"History" tab randomly disappears

[phptek]

PHP 7.1 / Ubuntu 16.04 / silverstripe/framework 4.3.3

In DataObjectHistory::getHistoryFields(), there's a check which causes the "History" tab to disappear. It does this when you select the "Publish" button on your custom DataObject subclass.

Commenting out this check, fixes the problem. Not sure it's even needed as my system seems to work OK without it.

//        if (!$owner->isLatestVersion()) {
//            return null;
//        }

[sinan-evanshunt]

I confirm the same issue on my setup as well. And commenting out that if statement does make the History tab stay in place.