Set tab name on creation instead of on render

default-plugins/tab-bar/src/tab.rs

@@ -46,11 +46,7 @@ pub fn tab_style(
     capabilities: PluginCapabilities,
 ) -> LinePart {
     let separator = tab_separator(capabilities);
-    let mut tab_text = if text.is_empty() {
-        format!("Tab #{}", position + 1)
-    } else {
-        text
-    };
+    let mut tab_text = text;
     if is_sync_panes_active {
         tab_text.push_str(" (Sync)");
     }

zellij-server/src/tab.rs

@@ -259,7 +259,11 @@ impl Tab {
             index,
             position,
             panes,
-            name,
+            name: if name.is_empty() {
+                format!("Tab #{} (unnamed)", position + 1)
+            } else {
+                name
+            },
             max_panes,
             panes_to_hide: HashSet::new(),
             active_terminal: pane_id,