[BUG] Can't progress after Azde's Cave

I'm in act 3, I finished going through the Azde's Cave but the "Escape the Azde's Cave" objective wasn't updated, so I can't continue with the story. When I glided down, the dialogue with Zau saying "I-- I flew, I actually flew!" started, and from what I watched in YouTube, the "Escape the Azde's Cave" objective should complete when this dialogue ends. But it didn't complete. I may have been because, before the dialogue sequence finished, I ran back inside the cave to see if there was some secret I missed.

Platform: PC

Operating system version: Windows 11

Save files and 2 screenshots are attached.