I have an Application run definition configured to show a log file in the Run tool window. When I click on the log's tab in the Run window (while the application is still running), the log's display is empty. If I click on the console tab and then immediately back on the log's tab, the log's output is then shown. This happens each time. If I do not click on the log tab until after the application has terminated, the log output is shown on the first tab activation.
I know this worked fine in previous IDEA versions, but I am not sure when the bug might have been introduced.