Reload file explorer cause all roots disappear from navigation but current opening root.

[manh4995v2]

This happends with nuget 1.3.6 and elfinder 2.1.60
I temporarily fix this by add: customData: {init: 1} in JS code that create elFinder instance.

[manh4995v2]

The same happends with elfinder 2.1.49.
I believe that in elFinder.NetCore.Drivers.FileSystem.FileSystemDriver.cs, the below code, that lists root in response, is missing from method OpenAsync
foreach (var item in Roots)
{
response.Files.Add(await BaseModel.CreateAsync(new FileSystemDirectory(item.RootDirectory), item));
}

[gordon-matt]

Thanks for your pointing out a potential bug. Please fork this project, make the change to add multiple roots to demo the problem.. and comment here with the link to your fork.. I'll try to look at it as soon as I can.