How to get Quick Filter back in Synaptic [Ubuntu 16.04 and later]

Ubuntu 16.04, Synaptic Package Manager does not have a search box for quick filter. I can use search button, but it opens dialog every time which is really annoying and not convenient.

I want to have something like this which we used to have in earlier releases.

Did Ubuntu made this change or has it been changed by Synaptic? What is the way to get quick filter back in Ubuntu 16.04?

you can try a couple of things:

sudo apt-get install apt-xapian-index
sudo update-apt-xapian-index -vf

If that doesn't work you can try:

sudo apt-get install --reinstall synaptic
sudo dpkg-reconfigure synaptic

Hopefully that will take care of your issues.