Since the deployment of the new version of the Query Helper, a display bug occurs.
When I open a query with a long list of results as this one, and try to scroll down to see the bottom of the list, I can't, and get automatically back to the top part of the screen (with Query Helper and text editor).
It happens even if the Query Helper is closed. But it doesn't happen all the time. It's blocking for browsing query results though.