3 files changed, 5 insertions, 3 deletions
diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index 71189cf697..9f584d0899 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -71,6 +71,8 @@ def configure(env):
             )
         # Tools need more memory. Initial stack memory in bytes. See `src/settings.js` in emscripten repository (will be renamed to INITIAL_MEMORY).
         env.Append(LINKFLAGS=["-s", "TOTAL_MEMORY=33554432"])
+    elif env["builtin_icu"]:
+        env.Append(CCFLAGS=["-frtti"])
     else:
         # Disable exceptions and rtti on non-tools (template) builds
         # These flags help keep the file size down.
diff --git a/platform/javascript/display_server_javascript.cpp b/platform/javascript/display_server_javascript.cpp
index af8800d565..92e13553fc 100644
--- a/platform/javascript/display_server_javascript.cpp
+++ b/platform/javascript/display_server_javascript.cpp
@@ -948,8 +948,8 @@ void DisplayServerJavaScript::window_set_size(const Size2i p_size, WindowID p_wi
 	last_width = p_size.x;
 	last_height = p_size.y;
 	double scale = godot_js_display_pixel_ratio_get();
-	emscripten_set_canvas_element_size(canvas_id, p_size.x * scale, p_size.y * scale);
-	emscripten_set_element_css_size(canvas_id, p_size.x, p_size.y);
+	emscripten_set_canvas_element_size(canvas_id, p_size.x, p_size.y);
+	emscripten_set_element_css_size(canvas_id, p_size.x / scale, p_size.y / scale);
 }
 
 Size2i DisplayServerJavaScript::window_get_size(WindowID p_window) const {
diff --git a/platform/javascript/js/libs/library_godot_os.js b/platform/javascript/js/libs/library_godot_os.js
index 488753d704..44b104922e 100644
--- a/platform/javascript/js/libs/library_godot_os.js
+++ b/platform/javascript/js/libs/library_godot_os.js
@@ -200,7 +200,7 @@ const GodotFS = {
 				}
 				FS.mkdirTree(dir);
 			}
-			FS.writeFile(path, new Uint8Array(buffer), { 'flags': 'wx+' });
+			FS.writeFile(path, new Uint8Array(buffer));
 		},
 	},
 };