Auto Save Functionality Doesn't Work When in Tabs

[mtwb47]

I'm using VimWiki 2.5. I'm in Neovim (non Lua).

I use Vim tabs so that I can have two of my wikis open all the time. The problem is that this seems to disable VimWiki's autosave functionality (where the file saves when you go back up or down in the wiki, if that makes sense).

Steps to recreate the issue:
Two different wikis in vim tabs. Move away from linked,wiki, like going back to the previous page, and then close vimwiki/vim. Content does not save, as it should. Requires manual :wq on all changed files.

Expected behavior:
It should save when you exit that particular file and go elsewhere in the wiki (up or down linked files).