question: What's the difference between change start page types?

[s7san007]

Application

YouTube

Question description

I can't see any difference between "once" and "always".
I've restarted the app once, twice, many times and I see no difference.

Acknowledgements

• This issue is not a duplicate of an existing question.
• I have chosen an appropriate title.
• All requested information has been provided properly.
• I have written the title and contents in English.

[inotia00]

For some start page types, the start page is changed only once on a cold start
(e.g. Library)

This setting makes the start page change even on a warm start

#2395 (comment)