From 046145fdd7a0bf245770f7866530ae263b927708 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Mon, 31 Mar 2025 20:41:20 +0200
Subject: [PATCH] fix: make sure CSS is preserved during SSR with bindings
 (#15645)

fixes #15543

No test because this is a one-liner in a stable part of the code-base, also it can only happen within legacy mode when using bindings which is not getting any new updates at this point
---
 .changeset/smooth-mugs-grin.md               | 5 +++++
 packages/svelte/src/internal/server/index.js | 1 +
 2 files changed, 6 insertions(+)
 create mode 100644 .changeset/smooth-mugs-grin.md

diff --git a/.changeset/smooth-mugs-grin.md b/.changeset/smooth-mugs-grin.md
new file mode 100644
index 0000000000..3302a63012
--- /dev/null
+++ b/.changeset/smooth-mugs-grin.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: make sure CSS is preserved during SSR with bindings
diff --git a/packages/svelte/src/internal/server/index.js b/packages/svelte/src/internal/server/index.js
index 6098b496c5..bf36a595d8 100644
--- a/packages/svelte/src/internal/server/index.js
+++ b/packages/svelte/src/internal/server/index.js
@@ -49,6 +49,7 @@ export function copy_payload({ out, css, head, uid }) {
  */
 export function assign_payload(p1, p2) {
 	p1.out = p2.out;
+	p1.css = p2.css;
 	p1.head = p2.head;
 	p1.uid = p2.uid;
 }