c# Method tooltip doesn't appear in other project

Question

I wrote method description in one dll:

namespace DriveLibrary.Web {
    public class ParseHtml {
        /// <summary>
        /// Get Absolute URL adress from domain and arbitrary url (absolute or relative).
        /// </summary>
        /// <param name="ancor">Absolute or relative URL (&quot;/page.html&quot; or &quot;page.html&quot; or &quot;http://domain.com/page.html&quot;)</param>
        /// <param name="domain">Domain url with or without slash in the end (&quot;http://ya.ru/&quot; or &quot;https://google.com&quot;)</param>
        /// <param name="replaceAmp">Whether replase &quot;&amp;amp;&quot; with &quot;&amp;&quot;</param>
        /// <returns></returns>
        static public string GetAbsoluteUrl (string ancor, string domain, bool replaceAmp = true) {
            return "abs url";
        }
    }
}

In this project I see all tooltips well.

But from other project after I add this dll (I added link to dll from Debug folder) when I'm writing ParseHtml.GetAbsoluteUrl I don't see any description.