Go to Hive query editor.
Enter something with a syntax error, such as:
Click Explain. An error message appears (as expected) in the text editor field. Clicking inside the text editor field removes it. It's okay so far.
Click Explain. Click Explain again and perhaps a few more times. Each time the same error message appears once again inside the text editor. Clicking inside the text editor fields removes one of them, the rest remain there until the page is reloaded.
Expected: Clicking on the Explain button should begin with clearing the previous error message(s).