diff --git a/crates/horizon-client/src/font.rs b/crates/horizon-client/src/font.rs
index 1903cab7e..d0e8c8499 100644
--- a/crates/horizon-client/src/font.rs
+++ b/crates/horizon-client/src/font.rs
@@ -1201,6 +1201,31 @@ mod tests {
         assert!(!font.take_patches().is_empty());
     }
 
+    /// A renderer rebuilt over the same font (the loading screen's handoff)
+    /// makes its atlas texture from the textures alone, so the glyphs it had
+    /// rasterized into the previous texture must be placed into the new one.
+    #[test]
+    fn a_rebuilt_atlas_gets_its_glyphs_again() {
+        let sheet = png(16, 8, |x, _| x < 2 || (8..14).contains(&x));
+        let default = br#"{"providers":[{"type":"bitmap","file":"minecraft:font/a.png","ascent":7,"chars":["ab"]}]}"#;
+        let root = root(
+            "rebuild",
+            &[
+                ("assets/minecraft/font/default.json", default),
+                ("assets/minecraft/textures/font/a.png", &sheet),
+            ],
+        );
+        let font = load(&root);
+        let _ = std::fs::remove_dir_all(&root);
+        let first = font.glyph('a');
+        assert_eq!(font.take_patches().len(), 1);
+        font.reset_cache();
+        // Nothing is left over: drawing the character again places its pixels.
+        assert!(font.take_patches().is_empty());
+        assert_eq!(font.glyph('a').advance, first.advance);
+        assert_eq!(font.take_patches().len(), 1);
+    }
+
     #[test]
     fn provider_filters_follow_the_font_options() {
         let sheet = png(8, 8, |x, _| x < 4);
diff --git a/crates/horizon-client/src/game.rs b/crates/horizon-client/src/game.rs
index cdbd72d7b..1bd288bb7 100644
--- a/crates/horizon-client/src/game.rs
+++ b/crates/horizon-client/src/game.rs
@@ -12995,6 +12995,14 @@ fn build_renderer(
 ) -> Result<Renderer> {
     let assets = &pack.render;
     let atlas = &gui.atlas;
+    // The new renderer's atlas texture starts from `HudAtlas.pixels`, which
+    // holds the textures but never a glyph rasterized at run time. The font's
+    // cache still answers with the rects it drew into the previous renderer's
+    // texture, so forget them: the glyphs that are drawn again are placed into
+    // this texture (as `ui_theme` does when its atlas changes). Without this,
+    // Chinese and Japanese menu labels go blank when the loading screen hands
+    // over to the game.
+    atlas.font.reset_cache();
     let mut renderer = pollster::block_on(Renderer::new(
         window,
         offscreen,
@@ -13041,6 +13049,12 @@ fn loading_renderer(
         Some(atlas) => (atlas.pixels.as_slice(), atlas.width, atlas.height),
         None => (EMPTY_HUD.as_slice(), 1, 1),
     };
+    // A glyph rasterized into an earlier texture is not in these pixels; the
+    // new texture gets it again when the character is drawn (see
+    // `build_renderer`).
+    if let Some(atlas) = atlas {
+        atlas.font.reset_cache();
+    }
     let mut renderer = pollster::block_on(Renderer::new(
         window,
         offscreen,