From cd48240d48cb11c7766b5d7850263e4e038d259e Mon Sep 17 00:00:00 2001
From: Nolann Biron <biron.nolann@gmail.com>
Date: Thu, 28 May 2026 11:43:12 +0200
Subject: [PATCH] Fix OpenAPI code sample box not scrolling on initial load

The relative wrapper around the pre in CodeBlockRenderer was a block flex
item, so its min-height defaulted to its content size. The pre therefore
never shrunk inside the sticky OpenAPI preview column, leaving content
clipped by the parent's overflow-hidden without ever triggering the pre's
own overflow-auto scroll. Make the wrapper a flex column with min-h-0 so
the pre (as a scroll-container flex child) shrinks and scrolls correctly
whenever the available height is smaller than its content.
---
 .changeset/perky-wings-help.md                               | 5 +++++
 .../components/DocumentView/CodeBlock/CodeBlockRenderer.tsx  | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/perky-wings-help.md

diff --git a/.changeset/perky-wings-help.md b/.changeset/perky-wings-help.md
new file mode 100644
index 0000000000..3b7147cbf1
--- /dev/null
+++ b/.changeset/perky-wings-help.md
@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Fix OpenAPI CodeBlock scroll
diff --git a/packages/gitbook/src/components/DocumentView/CodeBlock/CodeBlockRenderer.tsx b/packages/gitbook/src/components/DocumentView/CodeBlock/CodeBlockRenderer.tsx
index 80447664a0..3b48e39844 100644
--- a/packages/gitbook/src/components/DocumentView/CodeBlock/CodeBlockRenderer.tsx
+++ b/packages/gitbook/src/components/DocumentView/CodeBlock/CodeBlockRenderer.tsx
@@ -63,7 +63,7 @@ export const CodeBlockRenderer = forwardRef(function CodeBlockRenderer(
                     </div>
                 ) : null}
             </div>
-            <div className="relative">
+            <div className="relative flex min-h-0 flex-col">
                 <CopyCodeButton
                     codeId={codeId}
                     style="absolute top-2 right-2 z-2 self-start justify-self-end font-sans leading-none opacity-0 backdrop-blur-md group-hover/codeblock:opacity-11"