diff --git a/packages/views/editor/link-hover-card.tsx b/packages/views/editor/link-hover-card.tsx
index 007bb21428..4bb9db1f5b 100644
--- a/packages/views/editor/link-hover-card.tsx
+++ b/packages/views/editor/link-hover-card.tsx
@@ -69,9 +69,16 @@ function useLinkHover(containerRef: React.RefObject<HTMLElement | null>, disable
       if (!link) return;
       const href = link.getAttribute("href");
       if (!href || isMentionHref(href)) return;
-      // Issue mention cards render as <a class="issue-mention"> — they
-      // display their own rich info, a URL hover card is redundant.
-      if (link.classList.contains("issue-mention")) return;
+      // Mention chips render as <a class="issue-mention"> / <a
+      // class="project-mention"> — they display their own rich info, so a URL
+      // hover card is redundant, and the URL it would offer to copy is an
+      // in-app path rather than the shareable link the user expects.
+      if (
+        link.classList.contains("issue-mention") ||
+        link.classList.contains("project-mention")
+      ) {
+        return;
+      }
 
       clearTimeout(hideTimer.current);
       showTimer.current = window.setTimeout(() => {
diff --git a/packages/views/editor/styles/prose.css b/packages/views/editor/styles/prose.css
index 60bd0bcf81..dfd1f855f0 100644
--- a/packages/views/editor/styles/prose.css
+++ b/packages/views/editor/styles/prose.css
@@ -377,13 +377,18 @@
   text-decoration-color: var(--brand);
 }
 
-/* Issue mention cards — inline cards that sit within text flow */
-.rich-text-editor a.issue-mention {
+/* Mention chips — inline cards that sit within text flow. The chip already
+   carries its own affordance (border, icon, hover background), so the generic
+   link color and underline above would be a second, competing one drawn
+   through the card. Every chip-shaped mention belongs here. */
+.rich-text-editor a.issue-mention,
+.rich-text-editor a.project-mention {
   color: inherit;
   text-decoration: none;
 }
 
-.rich-text-editor a.issue-mention:hover {
+.rich-text-editor a.issue-mention:hover,
+.rich-text-editor a.project-mention:hover {
   text-decoration: none;
 }