diff --git a/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/intro.html b/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/intro.html
deleted file mode 100644
index ec035adb9..000000000
--- a/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/intro.html
+++ /dev/null
@@ -1,42 +0,0 @@
-<template id="intro-template">
-  <div id="intro" data-composition-id="intro" data-width="1920" data-height="1080">
-    <div
-      class="title"
-      style="
-        position: absolute;
-        top: 50%;
-        left: 50%;
-        transform: translate(-50%, -50%);
-        font-size: 120px;
-        font-family: Impact, sans-serif;
-        color: #fff;
-        opacity: 0;
-      "
-    >
-      HELLO WORLD
-    </div>
-    <style>
-      #intro {
-        position: relative;
-        width: 1920px;
-        height: 1080px;
-        background: #111;
-      }
-    </style>
-    <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
-    <script>
-      (function () {
-        window.__timelines = window.__timelines || {};
-        var tl = gsap.timeline({ paused: true });
-        var scope = "#intro";
-        tl.fromTo(
-          scope + " .title",
-          { opacity: 0, y: 50, scale: 0.8 },
-          { opacity: 1, y: 0, scale: 1, duration: 0.5, ease: "power3.out" },
-          0.2,
-        );
-        window.__timelines["intro"] = tl;
-      })();
-    </script>
-  </div>
-</template>
diff --git a/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/root.html b/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/root.html
deleted file mode 100644
index bafbd7fde..000000000
--- a/packages/core/src/runtime/__fixtures__/sub-comp-id-selector/root.html
+++ /dev/null
@@ -1,48 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
-    <style>
-      body {
-        margin: 0;
-        width: 1920px;
-        height: 1080px;
-        overflow: hidden;
-        background: #000;
-      }
-      .scene {
-        position: absolute;
-        inset: 0;
-        overflow: hidden;
-      }
-      #scene-intro {
-        opacity: 1;
-      }
-    </style>
-  </head>
-  <body>
-    <div
-      id="root"
-      data-composition-id="main"
-      data-start="0"
-      data-duration="4"
-      data-width="1920"
-      data-height="1080"
-    >
-      <div
-        id="scene-intro"
-        class="scene"
-        data-composition-id="intro"
-        data-composition-src="intro.html"
-        data-start="0"
-        data-duration="4"
-        data-track-index="0"
-      ></div>
-    </div>
-    <script>
-      window.__timelines = window.__timelines || {};
-      window.__timelines["main"] = gsap.timeline({ paused: true });
-    </script>
-  </body>
-</html>
diff --git a/packages/core/src/runtime/__fixtures__/sub-comp-t0/index.html b/packages/core/src/runtime/__fixtures__/sub-comp-t0/index.html
deleted file mode 100644
index 00d00a260..000000000
--- a/packages/core/src/runtime/__fixtures__/sub-comp-t0/index.html
+++ /dev/null
@@ -1,88 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=1920, height=1080" />
-    <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
-    <style>
-      * {
-        margin: 0;
-        padding: 0;
-        box-sizing: border-box;
-      }
-      html,
-      body {
-        width: 1920px;
-        height: 1080px;
-        overflow: hidden;
-        background: #07110d;
-      }
-      #root {
-        position: relative;
-        width: 1920px;
-        height: 1080px;
-        overflow: hidden;
-        background: #07110d;
-      }
-      .scene {
-        position: absolute;
-        inset: 0;
-        overflow: hidden;
-        opacity: 0;
-      }
-      #scene-hook {
-        opacity: 1;
-      }
-    </style>
-  </head>
-  <body>
-    <div
-      id="root"
-      data-composition-id="main"
-      data-start="0"
-      data-duration="6"
-      data-width="1920"
-      data-height="1080"
-    >
-      <!-- First sub-comp at near-zero start: the bug trigger -->
-      <div
-        id="scene-hook"
-        class="scene"
-        data-layout-allow-overflow
-        data-composition-id="hook"
-        data-composition-src="compositions/hook.html"
-        data-start="0.001"
-        data-duration="2.0"
-        data-track-index="0"
-      ></div>
-
-      <!-- Second sub-comp at a later start: works correctly -->
-      <div
-        id="scene-later"
-        class="scene"
-        data-layout-allow-overflow
-        data-composition-id="later"
-        data-composition-src="compositions/later.html"
-        data-start="2.5"
-        data-duration="3.5"
-        data-track-index="1"
-      ></div>
-    </div>
-
-    <script>
-      window.__timelines = window.__timelines || {};
-      var tl = gsap.timeline({ paused: true });
-
-      // Transition: hook zooms out at 2.5s
-      tl.to("#scene-hook", { scale: 2.5, opacity: 0, duration: 0.4, ease: "power3.in" }, 2.5);
-      tl.fromTo(
-        "#scene-later",
-        { scale: 0.5, opacity: 0 },
-        { scale: 1, opacity: 1, duration: 0.4, ease: "power3.out" },
-        2.65,
-      );
-
-      window.__timelines["main"] = tl;
-    </script>
-  </body>
-</html>
