1 files changed, 15 insertions, 13 deletions

diff --git a/platform/linuxbsd/display_server_x11.cpp b/platform/linuxbsd/display_server_x11.cpp
index 74f31bb979..198eacd1f3 100644
--- a/platform/linuxbsd/display_server_x11.cpp
+++ b/platform/linuxbsd/display_server_x11.cpp
@@ -323,20 +323,21 @@ void DisplayServerX11::mouse_set_mode(MouseMode p_mode) {
 	if (mouse_mode == MOUSE_MODE_CAPTURED || mouse_mode == MOUSE_MODE_CONFINED || mouse_mode == MOUSE_MODE_CONFINED_HIDDEN) {
 		//flush pending motion events
 		_flush_mouse_motion();
-		WindowData &main_window = windows[MAIN_WINDOW_ID];
+		WindowID window_id = windows.has(last_focused_window) ? last_focused_window : MAIN_WINDOW_ID;
+		WindowData &window = windows[window_id];
 
 		if (XGrabPointer(
-					x11_display, main_window.x11_window, True,
+					x11_display, window.x11_window, True,
 					ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
-					GrabModeAsync, GrabModeAsync, windows[MAIN_WINDOW_ID].x11_window, None, CurrentTime) != GrabSuccess) {
+					GrabModeAsync, GrabModeAsync, window.x11_window, None, CurrentTime) != GrabSuccess) {
 			ERR_PRINT("NO GRAB");
 		}
 
 		if (mouse_mode == MOUSE_MODE_CAPTURED) {
-			center.x = main_window.size.width / 2;
-			center.y = main_window.size.height / 2;
+			center.x = window.size.width / 2;
+			center.y = window.size.height / 2;
 
-			XWarpPointer(x11_display, None, main_window.x11_window,
+			XWarpPointer(x11_display, None, window.x11_window,
 					0, 0, 0, 0, (int)center.x, (int)center.y);
 
 			Input::get_singleton()->set_mouse_position(center);
@@ -358,7 +359,8 @@ void DisplayServerX11::mouse_warp_to_position(const Point2i &p_to) {
 	if (mouse_mode == MOUSE_MODE_CAPTURED) {
 		last_mouse_pos = p_to;
 	} else {
-		XWarpPointer(x11_display, None, windows[MAIN_WINDOW_ID].x11_window,
+		WindowID window_id = windows.has(last_focused_window) ? last_focused_window : MAIN_WINDOW_ID;
+		XWarpPointer(x11_display, None, windows[window_id].x11_window,
 				0, 0, 0, 0, (int)p_to.x, (int)p_to.y);
 	}
 }
@@ -1332,8 +1334,9 @@ int DisplayServerX11::window_get_current_screen(WindowID p_window) const {
 
 void DisplayServerX11::gl_window_make_current(DisplayServer::WindowID p_window_id) {
 #if defined(GLES3_ENABLED)
-	if (gl_manager)
+	if (gl_manager) {
 		gl_manager->window_make_current(p_window_id);
+	}
 #endif
 }
 
@@ -3352,7 +3355,7 @@ void DisplayServerX11::process_events() {
 				DEBUG_LOG_X11("[%u] FocusIn window=%lu (%u), mode='%u' \n", frame, event.xfocus.window, window_id, event.xfocus.mode);
 
 				WindowData &wd = windows[window_id];
-
+				last_focused_window = window_id;
 				wd.focused = true;
 
 				if (wd.xic) {
@@ -3552,9 +3555,9 @@ void DisplayServerX11::process_events() {
 				// The X11 API requires filtering one-by-one through the motion
 				// notify events, in order to figure out which event is the one
 				// generated by warping the mouse pointer.
-
+				WindowID focused_window_id = windows.has(last_focused_window) ? last_focused_window : MAIN_WINDOW_ID;
 				while (true) {
-					if (mouse_mode == MOUSE_MODE_CAPTURED && event.xmotion.x == windows[MAIN_WINDOW_ID].size.width / 2 && event.xmotion.y == windows[MAIN_WINDOW_ID].size.height / 2) {
+					if (mouse_mode == MOUSE_MODE_CAPTURED && event.xmotion.x == windows[focused_window_id].size.width / 2 && event.xmotion.y == windows[focused_window_id].size.height / 2) {
 						//this is likely the warp event since it was warped here
 						center = Vector2(event.xmotion.x, event.xmotion.y);
 						break;
@@ -3629,9 +3632,8 @@ void DisplayServerX11::process_events() {
 				// Reset to prevent lingering motion
 				xi.relative_motion.x = 0;
 				xi.relative_motion.y = 0;
-
 				if (mouse_mode == MOUSE_MODE_CAPTURED) {
-					pos = Point2i(windows[MAIN_WINDOW_ID].size.width / 2, windows[MAIN_WINDOW_ID].size.height / 2);
+					pos = Point2i(windows[focused_window_id].size.width / 2, windows[focused_window_id].size.height / 2);
 				}
 
 				Ref<InputEventMouseMotion> mm;