Artifact is not copying empty folders

Summary

Artifact is not copying empty folders. This behavior is recent since it was working in Bamboo 5.14.1

Environment

The Bamboo instances tested were running in Linux

Steps to Reproduce

1. Create a plan with two stages
2. The first stage will do the following:
   1. Create the folder structure with some files:

      mkdir -p a/\{b1,b2,b3}/\{c1,c2}/d
      touch a/b1/test_b1
      touch a/b1/c1/test_c1
      

   2. Create a shared artifact with the following copy pattern:

   3. **/a/**
      

3. The second stage will just download the artifact

Expected Results

The following structure is observed:

17-Feb-2017 08:34:57	.
17-Feb-2017 08:34:57	├── a
17-Feb-2017 08:34:57	│   ├── b1
17-Feb-2017 08:34:57	│   │   ├── c1
17-Feb-2017 08:34:57	│   │   │   ├── d
17-Feb-2017 08:34:57	│   │   │   └── test_c1
17-Feb-2017 08:34:57	│   │   ├── c2
17-Feb-2017 08:34:57	│   │   │   └── d
17-Feb-2017 08:34:57	│   │   └── test_b1
17-Feb-2017 08:34:57	│   ├── b2
17-Feb-2017 08:34:57	│   │   ├── c1
17-Feb-2017 08:34:57	│   │   │   └── d
17-Feb-2017 08:34:57	│   │   └── c2
17-Feb-2017 08:34:57	│   │       └── d
17-Feb-2017 08:34:57	│   └── b3
17-Feb-2017 08:34:57	│       ├── c1
17-Feb-2017 08:34:57	│       │   └── d
17-Feb-2017 08:34:57	│       └── c2
17-Feb-2017 08:34:57	│           └── d

Actual Results

Only the folders with content are copied:

17-Feb-2017 08:34:57	.
17-Feb-2017 08:34:57	└── a
17-Feb-2017 08:34:57	    └── b1
17-Feb-2017 08:34:57	        ├── c1
17-Feb-2017 08:34:57	        │   └── test_c1
17-Feb-2017 08:34:57	        └── test_b1

The same test was performed in Bamboo 5.14.1 and the whole structure is returned (Artifact definition covers the empty folders).

Workaround

1. Create an artifact with the whole content that should be covered by the artifact
2. Publish this archive as the artifact
3. Download the artifact in the next stage
4. Unzip the artifact archive downloaded