diff --git a/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/chrome.css b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/chrome.css
new file mode 100644
index 00000000..7c48cae9
--- /dev/null
+++ b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/chrome.css
@@ -0,0 +1,12 @@
+
+:root[zen-compact-mode="true"]:not([customizing]):not([inDOMFullscreen="true"]) {
+  @media (-moz-bool-pref: "zen.view.compact.hide-tabbar") or (-moz-bool-pref: "zen.view.use-single-toolbar") {
+    &:not([zen-right-side="true"]) #navigator-toolbox[flash-popup] {
+      left: calc(-1 * var(--zen-sidebar-width) + var(--zen-element-separation)) !important;
+    }
+    
+    &[zen-right-side="true"] #navigator-toolbox[flash-popup] {
+      right: calc(-1 * var(--zen-sidebar-width) + var(--zen-element-separation)) !important;
+    }
+  }
+}
diff --git a/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/image.png b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/image.png
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index 00000000..6219af15
Binary files /dev/null and b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/image.png differ
diff --git a/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/readme.md b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/readme.md
new file mode 100644
index 00000000..a5b2ab62
--- /dev/null
+++ b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/readme.md
@@ -0,0 +1,3 @@
+
+# Shy Switchy Sidebar
+Prevent compact mode sidebar from popping up when switching tabs by keyboard.
diff --git a/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/theme.json b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/theme.json
new file mode 100644
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--- /dev/null
+++ b/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/theme.json
@@ -0,0 +1,14 @@
+{
+    "id": "25f5221e-bf5f-4095-af43-d371e2cc1371",
+    "name": "Shy Switchy Sidebar",
+    "description": "Prevent compact mode sidebar from popping up when switching tabs by keyboard.",
+    "homepage": "https://github.com/different55/ShySwitchySidebar",
+    "style": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/chrome.css",
+    "readme": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/readme.md",
+    "image": "https://raw.githubusercontent.com/zen-browser/theme-store/main/themes/25f5221e-bf5f-4095-af43-d371e2cc1371/image.png",
+    "author": "different55",
+    "version": "1.0.0",
+    "tags": [],
+    "createdAt": "2025-02-02",
+    "updatedAt": "2025-02-02"
+}
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