Why are the updated keywords not shown when calling YouTube API v3 after updating the channel's keywords on studio.youtube.com?

I'm working on YouTube channel am update its keyword from 18 May 2023, when I open it from studio.youtube.com it returns data updated but when I call from API v3 the returned keywords not updated until now 28 May.

I'm working on YouTube channel am update its keyword from 18 May 2023, when I open it from studio.youtube.com it returns data updated but when I call from API v3 the returned keywords not updated until now 28 May.