fix: explicitly untrack the children of `<Show/>`

leptos/src/show.rs

@@ -3,7 +3,11 @@ use crate::{
     IntoView,
 };
 use leptos_macro::component;
-use reactive_graph::{computed::ArcMemo, traits::Get};
+use reactive_graph::{
+    computed::ArcMemo,
+    traits::{GetUntracked, Track},
+    untrack,
+};
 use tachys::either::Either;
 
 #[component]
@@ -23,8 +27,11 @@ where
     let memoized_when = ArcMemo::new(move |_| when());
     let children = children.into_inner();
 
-    move || match memoized_when.get() {
-        true => Either::Left(children()),
-        false => Either::Right(fallback.run()),
+    move || {
+        memoized_when.track();
+        untrack(|| match memoized_when.get_untracked() {
+            true => Either::Left(children()),
+            false => Either::Right(fallback.run()),
+        })
     }
 }