diff --git a/crates/workspace/src/pane_group.rs b/crates/workspace/src/pane_group.rs
index 2ece5030f31091f64c322ad8d04259a53cad35c1..52761b06c814522220342e15c01e38f253a17667 100644
--- a/crates/workspace/src/pane_group.rs
+++ b/crates/workspace/src/pane_group.rs
@@ -398,7 +398,9 @@ impl PaneAxis {
             }
 
             if self.members.len() == 1 {
-                Ok(self.members.pop())
+                let result = self.members.pop();
+                *self.flexes.borrow_mut() = vec![1.; self.members.len()];
+                Ok(result)
             } else {
                 Ok(None)
             }