fix Expander.cs (#17411)

2 years ago · 6d5d2979ce
1 changed files with 1 additions and 1 deletions
--- a/src/Avalonia.Controls/Expander.cs
+++ b/src/Avalonia.Controls/Expander.cs
@ -232,7 +232,7 @@ namespace Avalonia.Controls
                }
                else
                {
-                    await ContentTransition.Start(visualContent, null, forward, _lastTransitionCts.Token);
+                    await ContentTransition.Start(visualContent, null, !forward, _lastTransitionCts.Token);
                }
            }