The bug reporting tool does not allow to raise bugs. It merrily fires up some log file to Silicon Labs containing god knows what and then just wraps your login page.
I checked Simplicity Studio V4 and it the help->report bug->submit bug at www.silabs.com works to create ticket into salessforce.
Buts it the log file could not automatically generated and upload to the ticket created. You still need to login to salesforce and manually upload the log file.
My views are my own and do not necessarily represent the views of Silicon Labs