5.4.0

Version 5.4.0 (2025-11-20)

Support for the following native SDK dependencies:

• Android: com.chartboost:chartboost-mediation-sdk:5.4.+
• iOS: ChartboostMediationSDK ~> 5.4.0

Fixed

• Memory leak in UnityBannerAd where event subscriptions were never cleaned up
• Memory leak in BannerVisualElement where event subscriptions were never cleaned up
• Native memory leak in Android FullscreenAdQueue missing proper disposal
• Memory leak in iOS FullscreenAdQueue missing IDisposable implementation
• Cache memory leak in iOS BannerAd missing AdCache.ReleaseAd() call
• Cache memory leak in Android BannerAd missing AdCache.ReleaseAd() call
• Race condition in UnityBannerAd allowing multiple concurrent async sync tasks
• AdLoadRequest finalizer causing GC thread deadlocks (finalizer removed)
• Null reference exception in AndroidExtensions.MapToWinningBidInfo()
• Null reference exception in Android FullscreenAd.Events using wrong error variable
• Android observers being prematurely garbage collected
• Thread-safety issues in AdCache (converted to ConcurrentDictionary)

Changed

• Updated com.chartboost.core dependency from 1.0.2 to 1.1.0
• Updated com.chartboost.unity.utilities dependency from 1.0.2 to 1.0.4