No "more" link or Button on archive with personalized excerpt

Hi

I've set personalized excerpt for some post to be more relevant and to increase the CTR on my website.

The problem is : when i open an archive page like a search page all the posts which have a personalized excerpt don't show the "more" link nor a "more" button while other posts show the "more" button as i set it up in the backoffice.

Could you fix this or tell me how to fix this please ?

Thanks in advance for the answer :o)

I've put an example link as website url for you to see