diff --git a/src/animation/client.h b/src/animation/client.h
index 7bc47ac..8de9b06 100644
--- a/src/animation/client.h
+++ b/src/animation/client.h
@@ -1054,20 +1054,11 @@ void client_set_focused_opacity_animation(Client *c) {
 		   sizeof(c->opacity_animation.target_border_color));
 	c->opacity_animation.target_opacity = c->focused_opacity;
 	c->opacity_animation.time_started = get_now_in_ms();
-	if (c->opacity_animation.running) {
-		memcpy(c->opacity_animation.initial_border_color,
-			   c->opacity_animation.current_border_color,
-			   sizeof(c->opacity_animation.initial_border_color));
-		c->opacity_animation.initial_opacity =
-			c->opacity_animation.current_opacity;
-	} else {
-		memcpy(c->opacity_animation.initial_border_color, bordercolor,
-			   sizeof(c->opacity_animation.initial_border_color));
-		memcpy(c->opacity_animation.current_border_color, bordercolor,
-			   sizeof(c->opacity_animation.current_border_color));
-		c->opacity_animation.initial_opacity = c->unfocused_opacity;
-		c->opacity_animation.current_opacity = c->unfocused_opacity;
-	}
+	memcpy(c->opacity_animation.initial_border_color,
+		   c->opacity_animation.current_border_color,
+		   sizeof(c->opacity_animation.initial_border_color));
+	c->opacity_animation.initial_opacity = c->opacity_animation.current_opacity;
+
 	c->opacity_animation.running = true;
 }
 
@@ -1087,20 +1078,10 @@ void client_set_unfocused_opacity_animation(Client *c) {
 	c->opacity_animation.target_opacity = c->unfocused_opacity;
 	c->opacity_animation.time_started = get_now_in_ms();
 
-	if (c->opacity_animation.running) {
-		memcpy(c->opacity_animation.initial_border_color,
-			   c->opacity_animation.current_border_color,
-			   sizeof(c->opacity_animation.initial_border_color));
-		c->opacity_animation.initial_opacity =
-			c->opacity_animation.current_opacity;
-	} else {
-		memcpy(c->opacity_animation.initial_border_color, border_color,
-			   sizeof(c->opacity_animation.initial_border_color));
-		memcpy(c->opacity_animation.current_border_color, border_color,
-			   sizeof(c->opacity_animation.current_border_color));
-		c->opacity_animation.initial_opacity = c->focused_opacity;
-		c->opacity_animation.current_opacity = c->focused_opacity;
-	}
+	memcpy(c->opacity_animation.initial_border_color,
+		   c->opacity_animation.current_border_color,
+		   sizeof(c->opacity_animation.initial_border_color));
+	c->opacity_animation.initial_opacity = c->opacity_animation.current_opacity;
 
 	c->opacity_animation.running = true;
 }
@@ -1135,6 +1116,10 @@ bool client_apply_focus_opacity(Client *c) {
 		if (target_opacity > opacity) {
 			target_opacity = opacity;
 		}
+		memcpy(c->opacity_animation.current_border_color,
+			   c->opacity_animation.target_border_color,
+			   sizeof(c->opacity_animation.current_border_color));
+		c->opacity_animation.current_opacity = target_opacity;
 		client_set_opacity(c, target_opacity);
 		client_set_border_color(c, c->opacity_animation.target_border_color);
 	} else if (animations && c->opacity_animation.running) {
diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index f41fb8c..98dc223 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -822,8 +822,9 @@ KeySymCode parse_key(const char *key_str, bool isbindsym) {
 		return kc;
 	}
 
-	// 普通键名直接转换
-	xkb_keysym_t sym = xkb_keysym_from_name(key_str, XKB_KEYSYM_NO_FLAGS);
+	// change key string to keysym, case insensitive
+	xkb_keysym_t sym =
+		xkb_keysym_from_name(key_str, XKB_KEYSYM_CASE_INSENSITIVE);
 
 	if (isbindsym) {
 		kc.type = KEY_TYPE_SYM;
@@ -940,6 +941,12 @@ FuncType parse_func_name(char *func_name, Arg *arg, char *arg_value,
 						 char *arg_value5) {
 
 	FuncType func = NULL;
+	(*arg).i = 0;
+	(*arg).i2 = 0;
+	(*arg).f = 0.0f;
+	(*arg).f2 = 0.0f;
+	(*arg).ui = 0;
+	(*arg).ui2 = 0;
 	(*arg).v = NULL;
 	(*arg).v2 = NULL;
 	(*arg).v3 = NULL;
@@ -2869,7 +2876,10 @@ void parse_config_file(Config *config, const char *file_path) {
 	}
 
 	if (!file) {
-		perror("Error opening file");
+		fprintf(stderr,
+				"\033[1;31m\033[1;33m[ERROR]:\033[0m Failed to open "
+				"config file: %s\n",
+				file_path);
 		return;
 	}
 
diff --git a/src/mango.c b/src/mango.c
index f5583c3..591d4f6 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -969,7 +969,6 @@ static struct wlr_xwayland *xwayland;
 
 void client_change_mon(Client *c, Monitor *m) {
 	setmon(c, m, c->tags, true);
-	reset_foreign_tolevel(c);
 	if (c->isfloating) {
 		c->float_geom = c->geom =
 			setclient_coordinate_center(c, c->mon, c->geom, 0, 0);
@@ -1071,6 +1070,9 @@ void swallow(Client *c, Client *w) {
 	c->tags = w->tags;
 	c->geom = w->geom;
 	c->float_geom = w->float_geom;
+	c->stack_inner_per = w->stack_inner_per;
+	c->master_inner_per = w->master_inner_per;
+	c->master_mfact_per = w->master_mfact_per;
 	c->scroller_proportion = w->scroller_proportion;
 	c->next_in_stack = w->next_in_stack;
 	c->prev_in_stack = w->prev_in_stack;
@@ -2023,7 +2025,6 @@ buttonpress(struct wl_listener *listener, void *data) {
 			selmon = xytomon(cursor->x, cursor->y);
 			client_update_oldmonname_record(grabc, selmon);
 			setmon(grabc, selmon, 0, true);
-			reset_foreign_tolevel(grabc);
 			selmon->prevsel = ISTILED(selmon->sel) ? selmon->sel : NULL;
 			selmon->sel = grabc;
 			tmpc = grabc;
@@ -3825,6 +3826,12 @@ void init_client_properties(Client *c) {
 	c->stack_proportion = 0.0f;
 	c->next_in_stack = NULL;
 	c->prev_in_stack = NULL;
+	memcpy(c->opacity_animation.initial_border_color, bordercolor,
+		   sizeof(c->opacity_animation.initial_border_color));
+	memcpy(c->opacity_animation.current_border_color, bordercolor,
+		   sizeof(c->opacity_animation.current_border_color));
+	c->opacity_animation.initial_opacity = c->unfocused_opacity;
+	c->opacity_animation.current_opacity = c->unfocused_opacity;
 }
 
 void // old fix to 0.5
@@ -4672,6 +4679,7 @@ setfloating(Client *c, int32_t floating) {
 
 	Client *fc = NULL;
 	struct wlr_box target_box;
+	int32_t old_floating_state = c->isfloating;
 	c->isfloating = floating;
 	bool window_size_outofrange = false;
 
@@ -4741,7 +4749,7 @@ setfloating(Client *c, int32_t floating) {
 								layers[c->isfloating ? LyrTop : LyrTile]);
 	}
 
-	if (!c->isfloating) {
+	if (!c->isfloating && old_floating_state) {
 		set_size_per(c->mon, c);
 	}
 
@@ -4790,6 +4798,7 @@ void setmaximizescreen(Client *c, int32_t maximizescreen) {
 	if (c->mon->isoverview)
 		return;
 
+	int32_t old_maximizescreen_state = c->ismaximizescreen;
 	c->ismaximizescreen = maximizescreen;
 
 	if (maximizescreen) {
@@ -4819,7 +4828,7 @@ void setmaximizescreen(Client *c, int32_t maximizescreen) {
 
 	wlr_scene_node_reparent(&c->scene->node,
 							layers[c->isfloating ? LyrTop : LyrTile]);
-	if (!c->ismaximizescreen) {
+	if (!c->ismaximizescreen && old_maximizescreen_state) {
 		set_size_per(c->mon, c);
 	}
 
@@ -4852,6 +4861,7 @@ void setfullscreen(Client *c, int32_t fullscreen) // 用自定义全屏代理自
 	if (c->mon->isoverview)
 		return;
 
+	int32_t old_fullscreen_state = c->isfullscreen;
 	c->isfullscreen = fullscreen;
 
 	client_set_fullscreen(c, fullscreen);
@@ -4889,7 +4899,7 @@ void setfullscreen(Client *c, int32_t fullscreen) // 用自定义全屏代理自
 			layers[fullscreen || c->isfloating ? LyrTop : LyrTile]);
 	}
 
-	if (!c->isfullscreen) {
+	if (!c->isfullscreen && old_fullscreen_state) {
 		set_size_per(c->mon, c);
 	}
 
@@ -5018,6 +5028,7 @@ void setmon(Client *c, Monitor *m, uint32_t newtags, bool focus) {
 		arrange(oldmon, false, false);
 	if (m) {
 		/* Make sure window actually overlaps with the monitor */
+		reset_foreign_tolevel(c);
 		resize(c, c->geom, 0);
 		c->tags =
 			newtags ? newtags
@@ -5029,21 +5040,6 @@ void setmon(Client *c, Monitor *m, uint32_t newtags, bool focus) {
 	if (focus && !client_is_x11_popup(c)) {
 		focusclient(focustop(selmon), 1);
 	}
-
-	if (m) {
-
-		if (c->foreign_toplevel) {
-			remove_foreign_topleve(c);
-		}
-
-		add_foreign_toplevel(c);
-		if (m->sel && m->sel->foreign_toplevel)
-			wlr_foreign_toplevel_handle_v1_set_activated(
-				m->sel->foreign_toplevel, false);
-		if (c->foreign_toplevel)
-			wlr_foreign_toplevel_handle_v1_set_activated(c->foreign_toplevel,
-														 true);
-	}
 }
 
 void setpsel(struct wl_listener *listener, void *data) {
@@ -5798,7 +5794,8 @@ void updatemons(struct wl_listener *listener, void *data) {
 	if (selmon && selmon->wlr_output->enabled) {
 		wl_list_for_each(c, &clients, link) {
 			if (!c->mon && client_surface(c)->mapped) {
-				client_change_mon(c, selmon);
+				c->mon = selmon;
+				reset_foreign_tolevel(c);
 			}
 		}
 		focusclient(focustop(selmon), 1);