Fix CSS error and history loading

- Remove invalid max-height CSS property (GTK doesn't support it)
- Fix loading from history: update widget instead of calling removed method
- Update tab page title when loading from history

src/window.py

@@ -136,7 +136,6 @@ class RosterWindow(Adw.ApplicationWindow):
             /* Force both header bars to same height */
             headerbar {
                 min-height: 46px;
-                max-height: 46px;
                 padding-top: 0;
                 padding-bottom: 0;
                 padding-left: 0px;
@@ -495,8 +494,16 @@ class RosterWindow(Adw.ApplicationWindow):
                     )
                     current_tab.modified = False
 
-                    # Load into UI
+                    # Load into UI - get current widget and update it
-                    self._load_request_to_ui(request)
+                    page = self.tab_view.get_selected_page()
+                    if page:
+                        widget = self.page_to_widget.get(page)
+                        if widget:
+                            widget._load_request(request)
+                            widget.original_request = current_tab.original_request
+                            widget.modified = False
+                        # Update tab page title
+                        page.set_title(name)
         else:
             # Current tab has changes or is not a "New Request"
             # Create a new tab