title: Android studio "Clear All" in log cat, logs still come back when changing log level filter
body: <p>In LogCat, when I click the "clear all" button, it appears to clear all of the logs. However, if I change the log level, and come back to the previous log level, all of the logs have returned.</p>
  
  <p>For example, I'm looking at "Verbose". I choose "Clear all". The log clears. I switch over to "Debug". I switch back to "Verbose", now all of the Verbose logs that I thought I cleared, have now come back. It displays everything since I opened Android Studio.</p>
  
  <p>Additionally, the same issue occurs if I clear all, and then re-launch my app; I get flooded with old debug messages before seeing any new ones.</p>
  
  <p><strong>Is there any way to remove the logs for good, without having to restart Android Studio?</strong></p>
  
  <p><img src="https://i.stack.imgur.com/dOWwo.gif" alt="enter image description here"></p>