[RHEL 7] /tmp directory is not cleaned up

Issue

When using the Gnome-Terminal (directly or indirectly via "Terminator"), numerous resources remain claimed in /tmp

Just an excert from a random system:
gdbus 25214 25222 tkb16 17u REG 0,36 320 100759426 /tmp/vte418I8Z (deleted)
gdbus 25214 25222 tkb16 18u REG 0,36 13667 100759427 /tmp/vteJO9I8Z (deleted)

Summarized: The resources remain claimed while the user is online and the desktop is active:
root@hostname:~# lsof | grep deleted | grep vte | wc -l
1056

The expected behaviour is that the resources are properly cleaned up.