您好，这是在5.6已经修复的问题，可以应用以下三个修改在5.5上修复
https://github.com/EpicGames/UnrealEngine/commit/c64f8c238298789f55a10fedca59b3d36ca49a1c
https://github.com/EpicGames/UnrealEngine/commit/6d0cac162bc1ab27866c47383f25a5dc68bc0713
https://github.com/EpicGames/UnrealEngine/commit/52691c5a19aca63aa9812238fb82fe91c3a6d62d