Where has some useful functionality gone?

Consider the following code:

(add-hook 'post-command-hook 'dmp-post-command-hook)

(defun dmp-post-command-hook ()
  (message "Hello"))

When you are typing text into the minibuffer, some times some
other code like dmp-post-command-hook displays the text "Hello"
in the minibuffer so you can't see what text you are typing into
the minibuffer and you have to wait about 5 seconds for the
message to disappear, revealing the minibuffer of the code
you were typing into the minibuffer.

In a more up to date (I am using emacs-version 26.3) version of
Emacs it displays the Hello message beside the minibuffer
contents like this:

Enter File/Folder to load: [Hello]

so you can see the minibuffer at all times.  Where has this cool
feature gone?  is the feature in later versions of emacs.
I tried to install a later version of emacs but the sudo apt-get
install emacs told me that my version is already the most up to
date version.