Microsoft today pushed Windows 10 Mobile Preview Build 15222 to insiders in Fast Ring. You can read what fixes and improvements this build brings with itself by clicking here.

The Build, however, has only one known issue that one may like to have a glance at before installing this build.

Build 15222 Known Issues:

  • In some cases, the WeChat app may crash on launch.

So, that looks good!! But those using WeChat may face issue with app crashing on launch after installing Build 15222 on their phones.

Source: Windows Blog