Post Type options keep reverting BUG

I’ve used this plugin on many sites, and this is the first time I can’t correctly update the Post Type options within:

/wp-admin/options-general.php?page=nested-pages-settings&tab=posttypes

After hitting “Save Changes”

Notably, the options update and save just fine on the General tab:

/wp-admin/options-general.php?page=nested-pages-settings

I’m even able to reset all the options so that only Pages are nested, but then if I go back to the other tab and click “save” it reverts to multiple things checked.

I tried changing the values in the DB and that just wipes out any options selected, and I’m back to square 0.

This is happening on any site I have the plugin installed on, and probably happened in the last couple plugin version updates.