Stellaris - Uplifted pre-sapients are still in the pre-sapient stratum [v4.0.14] [1056]

[beepboopMKII]

Description
Uplifted pre-sapients are still in the pre-sapient stratum [v4.0.14] [1056]

Game Version
[v4.0.14] [1056]

What version do you use?
Steam

What expansions do you have installed?
Synthetic Dawn, Utopia, Leviathans Story Pack, Apocalypse, Megacorp, Distant Stars, Ancient Relics, Federations, Overlord, First Contact, The Machine Age, Grand Archive

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
(I also have bio-genesis but there's no tickbox to select it.)
I'm playing as an evolutionary predator nation with genesis guides and I've uplifted a bunch of pre-sapients, but for some reason some of the pops still count as being in the pre-sapient stratum. As far as I'm aware this is just a pure buff, as it sets their happiness to 100%, sets their housing usage to 0, sets their amenities usage to a negative(?), sets their political power to 0, and they're still able to work normal jobs.

Steps to reproduce the issue.
1. Uplift pre-sapients
2. Sometimes their stratum stays as pre-sapient and sometimes it gets properly changed.
* My theory is that if an uplifted pop doesn't get a job and instead just becomes a civilian, then it stays as a part of the pre-sapient stratum.

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[Nephandus]

There is a negative species trait for pre-sapient uplifted species called "Nascent Stage". It forces them to be pre-sapient in their first 5 years and in that time they do not take jobs and cannot be uplifted.

 

[TheDarkMaster]

In Phoenix, uplifted pre-sapients will forever remain in a strata class of 'pre-sapient' on their homeworld. This prevents them from automatically migrating or being relocated. They can still be used to build colony ships and will function completely normally on all planets other than their homeworld.