How come that the "v" symbol sometimes doesn't appear in some replies to my posts ?

[Cryptonomicon]

The symbol for "this post solved my problem" = like a "v" sometimes appear and sometimes not although I clicked on the relevant button. When I open the thread I see the symbol but it doesn't appear in "My Posts".

[Dennis_Handly · Accepted solution]

It's a checkmark.

I see it here on the View All:

https://h30434.www3.hp.com/t5/forums/recentpostspage/post-type/message/user-id/3077043

https://h30434.www3.hp.com/t5/Forum-Feedback-Suggestions/How-to-hide-my-name-on-this-forum/m-p/64870...

https://h30434.www3.hp.com/t5/Desktop-Software-and-How-To-Questions/Don-t-find-ROM-family-SSID-on-my...