WORKAROUND:
The qp5app process running for long periods of time shouldn't cause any issues. The qp5app process is used to format SQL statements for display. The UI layer calls out to it while building pages to display.
It is OK to kill the qp5app process. The Foglight Management Server (FMS) can restart the qp5app process if it is needed. In the worst case, if something goes wrong with the restart the SQL Statements won't be colored nicely in the Foglight console
STATUS:
Waiting for fix in a future release of Foglight.