Resolve window dragging issue on backplate click by introducing clear_hierarchy and clear_dirty to rebuild_layout

 src/main.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index 22503a3..fa6602d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -123,6 +123,7 @@ impl FilesystemApp {
     }
 
     fn rebuild_layout(&mut self) {
+        self.ui_context.clear_hierarchy();
         self.browse.save_name_box.prepare_text(&mut self.font_system);
         self.browse.search_box.prepare_text(&mut self.font_system);
 
@@ -478,6 +479,7 @@ impl FilesystemApp {
         self.widgets = widgets;
         self.text_items = text_items;
         self.page_buttons = page_buttons;
+        self.ui_context.clear_dirty();
         self.needs_rebuild = false;
     }
 }