In my case in Android 2.2, for some reason, Firebase was selected by default in the dropdown box marked above. So logs didn’t drop. I just needed to change it to No Filters. Then it worked.
I even tried restarting the logcat, that didn’t work too. No Filters did the magic.
Hope this helps someone.
Edit:
You can as well select Show only selected application for logcat to show only the current debugging process, i.e your app.