Xbox Perfection tracker bug

[WobblyLadyBug]

On my most recent play through I've noticed that the perfection tracker in Mr. Qi's walnut room has a bug. It says "Monster Slayer Hero:No" and it is at 90% of Total Complete, but when I go to the Adventures Guild and look at the Monster Eradication goals list it says that I've slayed all the monster required. And when I go to my other save files where I've reached perfection it says the same although I've been on the summit and also have the Statue Of True Perfection. I've noticed this only a few days ago and didn't have this problem before.
This is all on xbox series s and the game version v1.6.15 build 1

 

[NextXander]

The upcoming Stardew Valley 1.6.16 rewrites the achievement tracking to work much more reliably. In particular:

• The monster slayer goal tracking should now auto-fix itself when you load a save or connect in multiplayer.
• If needed, a new diagnostic command lets us check each achievement's unlock conditions to see why it isn't unlocking.

There is no release date for it yet, so until the patch comes out, you can use a temporary solution to fix the perfection tracker and achieve Perfection. To fix it, you just need to kill any monster; that will make the tracker correctly show that you've done all the monster eradication goals. If you use this solution, the issue might return later on, but if that happens, you can just kill another monster again. I hope this helps!