dictDefaultMessage is shown even when dropzone is not empty after displaying existing files

[3bood-kr]

So I'm using Laravel, and the problem is when I preload files from the session (old values when validation fails) using displayExistingFile, the number of files length doesn't get updated and stays at zero. This leads to whenever I have more than one preloaded file, and I remove one of them, the dz-started class gets removed from Dropzone and leads to showing the dictDefaultMessage even though Dropzone is not empty!
Here is an example:

I managed to partially fix this by updating this.files.length manually but still having some issues. Am I missing anything?

Browser / OS:

• OS: windows 10
• Browser: Firefox Developer Edition
• Version 5.9.3