CompressFiles Activity filename issue - the first letters of files are deleted

Using UiPath.Acitivities.System.Compression.Workflow.CompressFiles,
the first letters of files are deleted!

[Example]

  1. “abc.txt”, “efg.txt” files are in the “folder1” folder.
  2. I compress the folder with the activity
  3. “folder1.zip” is created
  4. The filenames which in “folder1.zip” are “bc.txt”, “fg.txt”

What would be the reason?