Pillars of Eternity II: Deadfire Turn-based Mode Briefly Added

It seems that Obsidian Entertainment accidentally rolled out a turn-based combat mode for Pillars of Eternity II: Deadfire this past week, or at least it appears to be accidental based on the fact that they quickly issued a hotfix to patch it out a few hours later. PC Gamer has the full story, with screenshots and a link to a video on Google Drive that can't be watched due to excessive plays:
Reddit user raggnarok first flagged the new combat mode, which was added on Thursday and removed a few hours later in a hotfix. In turn-based combat, each character could move a limited distance and perform one action per term, raggnarok said.

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Developer Obsidian Entertainment hasn't yet commented on the mode, so nobody is quite sure what to think, but perhaps it's working on a full-blown turn-based mode and pulled the trigger prematurely. Such a mode would completely change the balance of combat and, I suspect, require a full-scale rework of many skills and spells.