diff --git a/src/taskbar/task.c b/src/taskbar/task.c
index ccdcb69..1ccb926 100644
--- a/src/taskbar/task.c
+++ b/src/taskbar/task.c
@@ -48,8 +48,10 @@ Task *add_task(Window win)
 {
 	if (!win)
 		return NULL;
-	if (window_is_hidden(win))
+	if (window_is_hidden(win)) {
+		// fprintf(stderr, "%s %d: win = %ld not adding task: window hidden\n", __FUNCTION__, __LINE__, win);
 		return NULL;
+	}
 
 	XSelectInput(server.dsp, win, PropertyChangeMask | StructureNotifyMask);
 	XFlush(server.dsp);
@@ -83,7 +85,8 @@ Task *add_task(Window win)
 	get_title(&task_template);
 	get_icon(&task_template);
 
-	// printf("new task %s win %u: desktop %d, monitor %d\n", new_task.title, win, new_task.desktop, monitor);
+	// fprintf(stderr, "%s %d: win = %ld, task = %s\n", __FUNCTION__, __LINE__, win, task_template.title ? task_template.title : "??");
+	// fprintf(stderr, "new task %s win %u: desktop %d, monitor %d\n", new_task.title, win, new_task.desktop, monitor);
 
 	GPtrArray *task_group = g_ptr_array_new();
 	for (int j = 0; j < panels[monitor].num_desktops; j++) {
@@ -103,7 +106,7 @@ Task *add_task(Window win)
 		task_instance->win_h = task_template.win_h;
 		task_instance->current_state = -1; // to update the current state later in set_task_state...
 		if (task_instance->desktop == ALL_DESKTOPS && server.desktop != j) {
-			// hide ALL_DESKTOPS task on non-current desktop
+			// fprintf(stderr, "%s %d: win = %ld hiding task: another desktop\n", __FUNCTION__, __LINE__, win);
 			task_instance->area.on_screen = FALSE;
 		}
 		task_instance->title = task_template.title;
@@ -120,7 +123,6 @@ Task *add_task(Window win)
 
 		add_area(&task_instance->area, &taskbar->area);
 		g_ptr_array_add(task_group, task_instance);
-		// printf("add_task panel %d, desktop %d, task %s\n", i, j, task_instance->title);
 	}
 	Window *key = calloc(1, sizeof(Window));
 	*key = task_template.win;
@@ -147,6 +149,8 @@ void remove_task(Task *task)
 	if (!task)
 		return;
 
+	// fprintf(stderr, "%s %d: win = %ld, task = %s\n", __FUNCTION__, __LINE__, task->win, task->title ? task->title : "??");
+
 	if (taskbar_mode == MULTI_DESKTOP) {
 		Panel *panel = task->area.panel;
 		panel->area.resize_needed = 1;
diff --git a/src/taskbar/taskbar.c b/src/taskbar/taskbar.c
index 6486276..e069c18 100644
--- a/src/taskbar/taskbar.c
+++ b/src/taskbar/taskbar.c
@@ -308,6 +308,7 @@ void task_refresh_tasklist()
 {
 	if (!taskbar_enabled)
 		return;
+	// fprintf(stderr, "%s %d:\n", __FUNCTION__, __LINE__);
 
 	int num_results;
 	Window *win = server_get_property(server.root_win, server.atom._NET_CLIENT_LIST, XA_WINDOW, &num_results);
diff --git a/src/tint.c b/src/tint.c
index 90655a7..ac3f8ed 100644
--- a/src/tint.c
+++ b/src/tint.c
@@ -719,6 +719,7 @@ void update_desktop_names()
 
 void update_task_desktop(Task *task)
 {
+	// fprintf(stderr, "%s %d:\n", __FUNCTION__, __LINE__);
 	Window win = task->win;
 	remove_task(task);
 	task = add_task(win);
@@ -728,6 +729,8 @@ void update_task_desktop(Task *task)
 
 void event_property_notify(XEvent *e)
 {
+	gboolean debug = FALSE;
+
 	int i;
 	Window win = e->xproperty.window;
 	Atom at = e->xproperty.atom;
@@ -742,6 +745,8 @@ void event_property_notify(XEvent *e)
 
 		// Change name of desktops
 		else if (at == server.atom._NET_DESKTOP_NAMES) {
+			if (debug)
+				fprintf(stderr, "%s %d: win = root, atom = _NET_DESKTOP_NAMES\n", __FUNCTION__, __LINE__);
 			update_desktop_names();
 		}
 		// Change desktops
@@ -750,6 +755,8 @@ void event_property_notify(XEvent *e)
 				 at == server.atom._NET_DESKTOP_VIEWPORT ||
 				 at == server.atom._NET_WORKAREA ||
 				 at == server.atom._NET_CURRENT_DESKTOP) {
+			if (debug)
+				fprintf(stderr, "%s %d: win = root, atom = ?? desktops changed\n", __FUNCTION__, __LINE__);
 			if (!taskbar_enabled)
 				return;
 			int old_num_desktops = server.num_desktops;
@@ -835,14 +842,20 @@ void event_property_notify(XEvent *e)
 		}
 		// Window list
 		else if (at == server.atom._NET_CLIENT_LIST) {
+			if (debug)
+				fprintf(stderr, "%s %d: win = root, atom = _NET_CLIENT_LIST\n", __FUNCTION__, __LINE__);
 			task_refresh_tasklist();
 			panel_refresh = TRUE;
 		}
 		// Change active
 		else if (at == server.atom._NET_ACTIVE_WINDOW) {
+			if (debug)
+				fprintf(stderr, "%s %d: win = root, atom = _NET_ACTIVE_WINDOW\n", __FUNCTION__, __LINE__);
 			reset_active_task();
 			panel_refresh = TRUE;
 		} else if (at == server.atom._XROOTPMAP_ID || at == server.atom._XROOTMAP_ID) {
+			if (debug)
+				fprintf(stderr, "%s %d: win = root, atom = _XROOTPMAP_ID\n", __FUNCTION__, __LINE__);
 			// change Wallpaper
 			for (i = 0; i < num_panels; i++) {
 				set_panel_background(&panels[i]);
@@ -851,11 +864,15 @@ void event_property_notify(XEvent *e)
 		}
 	} else {
 		Task *task = task_get_task(win);
-		// printf("change win = %u, task = %p\n", win, task);
+		if (debug) {
+			char *atom_name = XGetAtomName(server.dsp, at);
+			fprintf(stderr, "%s %d: win = %ld, task = %s, atom = %s\n", __FUNCTION__, __LINE__, win, task ? (task->title ? task->title : "??") : "null", atom_name);
+			XFree(atom_name);
+		}
 		if (!task) {
-			if (at != server.atom._NET_WM_STATE)
-				return;
-			else {
+			if (debug)
+				fprintf(stderr, "%s %d\n", __FUNCTION__, __LINE__);
+			if (at == server.atom._NET_WM_STATE) {
 				// xfce4 sends _NET_WM_STATE after minimized to tray, so we need to check if window is mapped
 				// if it is mapped and not set as skip_taskbar, we must add it to our task list
 				XWindowAttributes wa;
@@ -863,11 +880,9 @@ void event_property_notify(XEvent *e)
 				if (wa.map_state == IsViewable && !window_is_skip_taskbar(win)) {
 					if ((task = add_task(win)))
 						panel_refresh = TRUE;
-					else
-						return;
-				} else
-					return;
+				}
 			}
+			return;
 		}
 		// printf("atom root_win = %s, %s\n", XGetAtomName(server.dsp, at), task->title);
 
@@ -885,6 +900,16 @@ void event_property_notify(XEvent *e)
 		}
 		// Demand attention
 		else if (at == server.atom._NET_WM_STATE) {
+			if (debug) {
+				int count;
+				Atom *atom_state = server_get_property(win, server.atom._NET_WM_STATE, XA_ATOM, &count);
+				for (int j = 0; j < count; j++) {
+					char *atom_state_name = XGetAtomName(server.dsp, atom_state[j]);
+					fprintf(stderr, "%s %d: _NET_WM_STATE = %s\n", __FUNCTION__, __LINE__, atom_state_name);
+					XFree(atom_state_name);
+				}
+				XFree(atom_state);
+			}
 			if (window_is_urgent(win)) {
 				add_urgent(task);
 			}
@@ -940,6 +965,11 @@ void event_configure_notify(XEvent *e)
 {
 	Window win = e->xconfigure.window;
 
+	if (0) {
+		Task *task = task_get_task(win);
+		fprintf(stderr, "%s %d: win = %ld, task = %s\n", __FUNCTION__, __LINE__, win, task ? (task->title ? task->title : "??") : "null");
+	}
+
 	// change in root window (xrandr)
 	if (win == server.root_win) {
 		signal_pending = SIGUSR1;
diff --git a/src/util/area.c b/src/util/area.c
index a771d27..277a0b1 100644
--- a/src/util/area.c
+++ b/src/util/area.c
@@ -328,6 +328,7 @@ void schedule_redraw(Area *a)
 
 	for (GList *l = a->children; l; l = l->next)
 		schedule_redraw((Area *)l->data);
+	panel_refresh = TRUE;
 }
 
 void hide(Area *a)
@@ -447,7 +448,8 @@ void remove_area(Area *a)
 
 	if (parent) {
 		parent->children = g_list_remove(parent->children, area);
-		parent->resize_needed = 1;
+		parent->resize_needed = TRUE;
+		panel_refresh = TRUE;
 		schedule_redraw(parent);
 	}
 
@@ -463,7 +465,9 @@ void add_area(Area *a, Area *parent)
 	a->parent = parent;
 	if (parent) {
 		parent->children = g_list_append(parent->children, a);
+		parent->resize_needed = TRUE;
 		schedule_redraw(parent);
+		panel_refresh = TRUE;
 	}
 }