Update plugin “null” from version x.xx to null

We’ve been having a little problem with some plugin updates lately (files missing, .maintenance mode file left in place). I know this isn’t likely related to Simple History at all, but just wondering what the problem could be. This is on multiple servers and sites, with the plugin in question seemingly being random.

Simple history is recording the events as:
Update plugin “null” from version x.xx to null

There’s a link to the changelog, but the plugin name and version are not being reported.