From fbc4fc195be0bd7237e5fb136a57b71b54301311 Mon Sep 17 00:00:00 2001
From: Mischa <mischa@gorinskat.nl>
Date: Fri, 19 Jun 2026 15:33:13 +0200
Subject: [PATCH] fix: slice File to Blob before append so 3rd-arg filename is
 always used

---
 themes/intotheeast/templates/gpx-manager.html.twig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/themes/intotheeast/templates/gpx-manager.html.twig b/themes/intotheeast/templates/gpx-manager.html.twig
index 9bf5135..cddba6c 100644
--- a/themes/intotheeast/templates/gpx-manager.html.twig
+++ b/themes/intotheeast/templates/gpx-manager.html.twig
@@ -138,8 +138,9 @@ function initUpload(formEl) {
         status.className = 'gpx-status';
         btn.disabled = true;
 
+        const slugged = slugifyFilename(file.name);
         const fd = new FormData();
-        fd.append('file', file, slugifyFilename(file.name));
+        fd.append('file', file.slice(0, file.size, file.type), slugged);
 
         const res = await apiFetch(`${API}/pages${route}/media`, { method: 'POST', body: fd });
         btn.disabled = false;