Clear color was not correctly being set, fixes #4939

drivers/gles3/rasterizer_gles3.cpp

@@ -225,7 +225,7 @@ void RasterizerGLES3::set_current_render_target(RID p_render_target) {
 	if (!p_render_target.is_valid() && storage->frame.current_rt && storage->frame.clear_request) {
 		//handle pending clear request, if the framebuffer was not cleared
 		glBindFramebuffer(GL_FRAMEBUFFER, storage->frame.current_rt->fbo);
-		print_line("unbind clear of: " + storage->frame.clear_request_color);
+
 		glClearColor(
 				storage->frame.clear_request_color.r,
 				storage->frame.clear_request_color.g,

editor/scene_tree_dock.cpp

@@ -803,7 +803,12 @@ void SceneTreeDock::_tool_selected(int p_tool, bool p_confirm_override) {
 			switch (p_tool) {
 				case TOOL_CREATE_2D_SCENE: new_node = memnew(Node2D); break;
 				case TOOL_CREATE_3D_SCENE: new_node = memnew(Spatial); break;
-				case TOOL_CREATE_USER_INTERFACE: new_node = memnew(Control); break;
+				case TOOL_CREATE_USER_INTERFACE: {
+					Control *node = memnew(Control);
+					node->set_anchors_and_margins_preset(PRESET_WIDE); //more useful for resizable UIs.
+					new_node = node;
+
+				} break;
 			}
 
 			editor_data->get_undo_redo().create_action("New Scene Root");

servers/visual/visual_server_raster.cpp

@@ -161,6 +161,7 @@ void VisualServerRaster::set_boot_image(const Ref<Image> &p_image, const Color &
 	VSG::rasterizer->set_boot_image(p_image, p_color, p_scale);
 }
 void VisualServerRaster::set_default_clear_color(const Color &p_color) {
+	VSG::viewport->set_default_clear_color(p_color);
 }
 
 bool VisualServerRaster::has_feature(Features p_feature) const {

servers/visual/visual_server_viewport.cpp

@@ -252,7 +252,9 @@ void VisualServerViewport::draw_viewports() {
 	// process all our active interfaces
 	ARVRServer::get_singleton()->_process();
 
-	clear_color = GLOBAL_GET("rendering/environment/default_clear_color");
+	if (Engine::get_singleton()->is_editor_hint()) {
+		clear_color = GLOBAL_GET("rendering/environment/default_clear_color");
+	}
 
 	//sort viewports
 	active_viewports.sort_custom<ViewportSort>();
@@ -660,5 +662,9 @@ bool VisualServerViewport::free(RID p_rid) {
 	return false;
 }
 
+void VisualServerViewport::set_default_clear_color(const Color &p_color) {
+	clear_color = p_color;
+}
+
 VisualServerViewport::VisualServerViewport() {
 }

servers/visual/visual_server_viewport.h

@@ -188,6 +188,7 @@ public:
 	virtual int viewport_get_render_info(RID p_viewport, VS::ViewportRenderInfo p_info);
 	virtual void viewport_set_debug_draw(RID p_viewport, VS::ViewportDebugDraw p_draw);
 
+	void set_default_clear_color(const Color &p_color);
 	void draw_viewports();
 
 	bool free(RID p_rid);