diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index b2567e431b253d..26fa4a19c80767 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -324,6 +324,28 @@ void ShaderMaterial::_get_property_list(List<PropertyInfo> *p_list) const {
 					is_uniform_type_compatible = E->get().type == cached.get_type();
 				}
 
+#ifndef DISABLE_DEPRECATED
+				// PackedFloat32Array -> PackedVector4Array conversion.
+				if (!is_uniform_type_compatible && E->get().type == Variant::PACKED_VECTOR4_ARRAY && cached.get_type() == Variant::PACKED_FLOAT32_ARRAY) {
+					PackedVector4Array varray;
+					PackedFloat32Array array = (PackedFloat32Array)cached;
+
+					for (int i = 0; i < array.size(); i += 4) {
+						Vector4 v = Vector4();
+
+						v.x = array[i];
+						v.y = (i + 1 < array.size()) ? array[i + 1] : 0.0f;
+						v.z = (i + 2 < array.size()) ? array[i + 2] : 0.0f;
+						v.w = (i + 3 < array.size()) ? array[i + 3] : 0.0f;
+
+						varray.push_back(v);
+					}
+
+					param_cache.insert(E->get().name, varray);
+					is_uniform_type_compatible = true;
+				}
+#endif
+
 				if (is_uniform_type_compatible && E->get().type == Variant::OBJECT && cached.get_type() == Variant::OBJECT) {
 					// Check if the Object class (hint string) changed, for example Texture2D sampler to Texture3D.
 					// Allow inheritance, Texture2D type sampler should also accept CompressedTexture2D.
diff --git a/servers/rendering/shader_language.cpp b/servers/rendering/shader_language.cpp
index 1e9690a8ae458d..5b4931edec5a74 100644
--- a/servers/rendering/shader_language.cpp
+++ b/servers/rendering/shader_language.cpp
@@ -3982,12 +3982,9 @@ Variant ShaderLanguage::constant_value_to_variant(const Vector<ShaderLanguage::C
 						}
 						value = Variant(array);
 					} else {
-						PackedFloat32Array array;
+						PackedVector4Array array;
 						for (int i = 0; i < array_size; i += 4) {
-							array.push_back(p_value[i].real);
-							array.push_back(p_value[i + 1].real);
-							array.push_back(p_value[i + 2].real);
-							array.push_back(p_value[i + 3].real);
+							array.push_back(Vector4(p_value[i].real, p_value[i + 1].real, p_value[i + 2].real, p_value[i + 3].real));
 						}
 						value = Variant(array);
 					}
@@ -4219,7 +4216,7 @@ PropertyInfo ShaderLanguage::uniform_to_property_info(const ShaderNode::Uniform
 				if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_SOURCE_COLOR) {
 					pi.type = Variant::PACKED_COLOR_ARRAY;
 				} else {
-					pi.type = Variant::PACKED_FLOAT32_ARRAY;
+					pi.type = Variant::PACKED_VECTOR4_ARRAY;
 				}
 			} else {
 				if (p_uniform.hint == ShaderLanguage::ShaderNode::Uniform::HINT_SOURCE_COLOR) {