Cannot delete Image file for contact avatar from system

I recently started adding contact pictures to my CardDAV synced contacts using emClient. This appears to work so far, however em Client does not seem to close the handle to the image files after using them, so the only way I can delete them from my system afterwards is to restart em client.

While this is a minor issue only, I sort of wanted to report this as a bug.

I _do _have another problem, which, might just be related, but I doubt that.
emClient Version: 7.1.30794.0