Pixel Puzzles Ultimate Jigsaw causes score spike on profile

Hello.

Whenever I earn an achievement in the game Pixel Puzzles Ultimate Jigsaw ( Pixel Puzzles Ultimate Jigsaw ), my score spikes by about 12 000 points. A day or two later, it settles at a normal level. The achievements I'm earning are worth less than 100 points, and just one or two at a time, but it consistently happens each time with this particular game.

I've done some surface level digging.
This game had a significant restructure around 9 months ago. See: https://steamdb.info/app/351030/history/?changeid=U:50563945
With this change, many IDs were changed to match completely different puzzles. For example, achievements/complete_pack_5000_puzzle_67 "Challenge 67 Complete!" was changed to "Palm Complete!", now matching an entirely different puzzle in-game. The Challenge 67 puzzle unlock was moved to achievements/complete_pack_7000_puzzle_67.

Using the above "Palm" example, I can see in-game that I have not unlocked or completed the puzzle. Steam tells me I do not have either of the two associated achievements. TSA says I have the "Palm Complete!" achievement (unlocked 4th July 2022) but not the associated "Item Unlocked" achievement. I did unlock the Challenge 67 achievements on that day, and those are still showing as unlocked on TSA as well as on Steam.

I've requested for the game to be re-scanned but I don't believe it's helping in this case. Perhaps my own profile needs a full re-scan to solve it on my end? Either way, I'm reporting this here as well as I'm observing the behavior for other users as well.

I hope you can make sense of this. It's a bastard of a game to navigate.

Thanks!

Hmm... this might explain why I keep seeing my total randomly raise and fall by over 3000.

I did earn a few PPU achievements in the past 24 hours, which would seem to coincide with another sudden rise.

After further testing, there is definitely something odd going on with this game in relation to scoring.

From my personal site history:
80,828 250726
84,338 250727 - Earned a couple of achievements in PPU, jumped over 3,000 points
84,446 250728
84,516 250729
81,250 250730 - A few days later, score dropped again by over 3,000 points
81,383 250731
84,814 250731 - Just grabbed 4 PPU achievements and score jumped over 3,000 points again. I expect this to drop again in the next few days by a similar amount.

Also to note, unlocked 3 Kiosk items in the test today linked to achievements, yet only 2 of the 3 displayed on my wall.