diff --git a/docs/en/changes/changes.md b/docs/en/changes/changes.md
index 942353d..5fd2ff6 100644
--- a/docs/en/changes/changes.md
+++ b/docs/en/changes/changes.md
@@ -20,8 +20,9 @@
   own words, `system`, `human`, `ai` and `tool`, with the tool calls an `ai` message made and each
   tool result under the call it answers. A response shows the answer, the model and the token
   counts. What it added stays unavailable for a LangChain call, because no request names the one
-  before it. The renderer is Horizon's, now pinned at `297f020`, which also draws a light theme's
-  scrollbars and other native controls light.
+  before it, and it now says so. It used to say the request before was not among the loaded bodies,
+  here and for the first call of any chain, where nothing is missing. The renderer is Horizon's, now
+  pinned at `88e0110`, which also draws a light theme's scrollbars and other native controls light.
 
 ## Claude Code
 
diff --git a/internal/view/conversation-view/HORIZON_COMMIT b/internal/view/conversation-view/HORIZON_COMMIT
index a4e85ad..5d6822b 100644
--- a/internal/view/conversation-view/HORIZON_COMMIT
+++ b/internal/view/conversation-view/HORIZON_COMMIT
@@ -1,3 +1,3 @@
-commit 297f0205e502a3bc795d236356a31364dec65b5c
+commit 88e0110add7c9d592e1dcf251a4eb6efb8c699a9
 package @skywalking-horizon-ui/conversation-view 1.1.0-dev
 source https://github.com/apache/skywalking-horizon-ui.git
diff --git a/internal/view/conversation-view/conversation-view.js b/internal/view/conversation-view/conversation-view.js
index 29f81a9..8af3490 100644
--- a/internal/view/conversation-view/conversation-view.js
+++ b/internal/view/conversation-view/conversation-view.js
@@ -1179,6 +1179,7 @@ const ENGLISH = {
   promptWholeBody: "The body",
   promptChanges: "What it added",
   promptNoPrevious: "The request before this one is not among the loaded bodies, so there is nothing to compare with.",
+  promptNoPreviousNamed: "This request names no request before it, so there is nothing to compare with.",
   promptSystem: "System prompt",
   promptTools: "Tools ({count})",
   promptMessages: "Messages ({count})",
@@ -2385,6 +2386,7 @@ function drawRequest(ctx, e, read2, sides, store) {
       <button type="button" class="acv-chip${state.promptWhole ? "" : " on"}" data-prompt-whole="0" aria-pressed="${!state.promptWhole}">${esc(s.promptChanges)}</button>
     </div>`;
   if (!state.promptWhole) {
+    if (previous === UNNAMED) return `${modes}<div class="acv-empty">${esc(s.promptNoPreviousNamed)}</div>`;
     if (!previous) return `${modes}<div class="acv-empty">${esc(s.promptNoPrevious)}</div>`;
     return `${modes}${drawDelta(ctx, e, deltaOf(previous, read2), read2, previous.messages.length)}`;
   }
@@ -2410,10 +2412,12 @@ function drawRequest(ctx, e, read2, sides, store) {
   const whole = section(ctx, e, "request-raw", s.promptWholeBody, "", json(ctx, read2.raw, `${e.id}|req|raw`));
   return `${modes}${system}${tools}${messages}${settings2}${whole}`;
 }
+const UNNAMED = "unnamed";
 function previousRequest(ctx, e, sides, store) {
   var _a, _b, _c;
   if (!sides.request) return null;
   const mine = store.manifestAt(sides.request.seq, sides.request.row);
+  if (mine && !mine.previous_request) return UNNAMED;
   if (!(mine == null ? void 0 : mine.previous_request)) return null;
   const response = store.responseOfRequestId(mine.previous_request);
   if (!(response == null ? void 0 : response.manifest.call)) return null;