请问一下iOS14 beta系统用哪个flutter_boost的版本比较稳定, 我试了两个版本都会有不同情况的奔溃.

1. ref: 'v1.17.1-hotfixes' 这个版本配合Flutter SDK 1.17.1 的情况下, 在从Flutter页面里面调用FLutter_boost的open方法打开另一个Flutter页面会奔溃: ] [VERBOSE-2:FlutterViewController.mm(148)] The supplied FlutterEngine is already used with FlutterViewController instance . One instance of the FlutterEngine can only be attached to one FlutterViewController at a time. Set FlutterEngine.viewController to nil before attaching it to another FlutterViewController.
"xxxxxx" (4758,0x16da23000) malloc: Incorrect checksum for freed object 0x1403e5200: probably modified after being freed.
Corrupt value: 0x2020227070612e
xxxxxx"(4758,0x16da23000) malloc: *** set a breakpoint in malloc_error_break to debug

2. "1.12.13+3" 这个版本跳转flutter页面没问题, 但是从flutter页面触发原生方法的时候, 在iOS14beta系统很大概率会奔溃卡死.
日志忘记记录, 大概意思就是对象释放掉了还被使用导致的.

Start by reproducing both reported paths on iOS 14 beta: opening another Flutter page with ref v1.17.1-hotfixes and invoking a native method with version 1.12.13+3 and Flutter SDK 1.17.1. Capture complete crash logs and compare the two versions; done means the affected flows no longer crash or the supported stable version and reproducible cause are documented.

Written by the indexing model from the issue text.