Yocto recipe not extract archive

Question

I'm trying to unpack .tar.gz file to my root during the building system, but it doesn't work because of an unclear reason for me. I did it in the same way as other recipes in my meta (which works fine), but in this case, I have an empty directory in the target system root. The recipe has the same name as tar.gz.

Based on Yocto Project Documentation and my other experience it should work fine. I tried to remove manually tmp, sstate-cache directories and rebuild system, but it doesn't change anything. The recipe is building, but the /my-app is empty. Can I force extract my archive?

Tree file:

├── meta-my
│   └── recipe-my-app-files
│       └── my-app
|           └── my-app.bb
│           └── files
│               ├── my-app.tar.gz
....

my-app.bb

DESCRIPTION = "My Application package preinstall"

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"

LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
RDEPENDS_my-app="bash qtdeclarative qtbase"
DEPENDS = "bash"

FILES_${PN} += "/my-app"

SRC_URI = "file://my-app.tar.gz"

BB_STRICT_CHECKSUM = "0"

S = "${WORKDIR}"

do_install() {
        # Create directories
        install -d ${D}/my-app
}