first image not shown when presentationStyle set to `.fade`

[JunsW]

The problem can be identified by setting the presentationStyle to .fade in the example project

GalleryConfigurationItem.presentationStyle(.fade),

Is there any workaround for this?

FYI

• The library is installed via pod
  pod 'ImageViewer', :git => 'https://github.com/Krisiacik/ImageViewer.git'

• My Swift is 4.2

• This issue should be the same one mentioned is issue #190