Vampire Coasties, rejoice: Creative Assembly has fixed a bug in Total War: Warhammer II that prevented players from raising the dead while at sea, and the fix is currently playable in the game’s beta branch. The patch also addresses a long list of other issues, notably including the inadvertent limit placed on the number of mods you could have running at the same time.
Since October, Vampire Coast factions haven’t been able to raise dead while fighting at sea, and have had to return to dry land to do so. That’s made their campaigns much more difficult than they were meant to be – effectively impossible, in some cases. Fortunately, that’s not how it’s supposed to work, and a fix should be out in the main branch before too long.
You can play with the fix applied now, however, albeit in beta form. As a post in the Total War forums explains, you simply have to right-click Total War: Warhammer II in your Steam library and select Properties, then click the Betas tab. Use the drop-down menu to select 8.3, and allow the game to update itself.