Several things are not updated when you capture and recruit a royal. I've tested this with the Wimp introduction royal.
1. If you capture them, you cannot strip them as a prisoner (https://steamuserimages-a.akamaihd.net/ugc/1841408985876892471/C126F8290B28867A6D61695C9D452F30FC2B1786/)
2. If you recruited them, they have several of their restrictions not updated correctly. This includes:
- Royal mood (locked at -12 Royal expectations for the higher ones) (https://steamuserimages-a.akamaihd.net/ugc/1841408985876842351/2B5705C0FA8A0233FF5BE9E60305669340C781A9/)
- Throne room and bedroom requirements: They just have none of those requirements and do not care if they have one at all. (https://steamuserimages-a.akamaihd.net/ugc/1841408985876842351/2B5705C0FA8A0233FF5BE9E60305669340C781A9/)
- Apparel requirements: They do not only not care if they do not have the appropriate royal apparel but also ignore if they are nude or not. (https://steamuserimages-a.akamaihd.net/ugc/1841408985876842351/2B5705C0FA8A0233FF5BE9E60305669340C781A9/ vs. https://steamuserimages-a.akamaihd.net/ugc/1841408985876842651/5E1F7C1FA33A35E23C07058C63E7755AC18C583A/)
- Work restrictions: They will have all work disabled that the royal titles disables even if they are not jealous/greedy/abrasive. Their character shows the skills are not disabled but the work tab still won't allow them (https://steamuserimages-a.akamaihd.net/ugc/1841408985876875061/3C4C9F05EDCD05AC1945C06231071F67A6BFF3EC/ https://steamuserimages-a.akamaihd.net/ugc/1841408985876875449/4E6E54E8091B6F7DF416DE1471B02F8645D01AA9/)
- Food wants are the full royal ones even without the named traits. (https://steamuserimages-a.akamaihd.net/ugc/1841408985876931457/A2C3B007D2773D19B65AB43C9D65AC50F277A08D/)
This is not related to those empire only titles but to normal player titles as well. Please excuse the fact that I did the screenshots for different royal pawns. I noticed too late that the first ones did not were 100% clear for the bug showcase.
How to reproduce:
1. Accept the Royal wimp quest
2. Captures Royal
3. Recruit Royal.
Both DLCs activated, no mods used.
Thanks for the bug report, I was able to reproduce this in 1.3.3235. I'll get a report into the devs for review.