Why are some transactions labeled "semi-private" when they have a higher privacy score than some labeled fully private?

[DanFornash]

I have one wallet with a privacy score of 9 that is still showing up as semi-private, and requires another coinjoin round. At the same time, there is more than one wallet in my "ring" (probably not the right term) with a privacy score of 8 that registers as fully private. Why is this? What is going on?

I have it set for speed, so only a score of 5 is supposedly needed. What gives?

[Kruwed]

You have a keen eye, your coin's semi private status is a result a hidden feature that was designed to protect certain UTXOs with weak privacy from being spent together. It's called "Safety Coinjoins", you can read more about it here - #10567

When your UTXO is remixed one more time, it will be assigned full privacy.

[DanFornash]

I see. So basically the reason it lacks privacy is because it can be connected to other wallets that have completed the coinjoin process, not because it can be connected to its original source, correct?

[turbolay]

Incorrect. In general, it is hard to guarantee the privacy of a coin, especially automatically. The safety coinjoins feature is there to minimize risks where coins gained a lot of anonscore in 1 coinjoin but still are not private against forensic techniques not accounted by the wallet. Remixes are extremely powerful