( I was sure I submitted that already, but can't find it anymore )
The issue is still present in build #1175
Go to the inventory view with the left tree.
Go on the platform, right click , select operation, then click on e.g. Manual Autodiscovery.
You end up in the operations tab at the right place with the correct values pre-filled.
But the "Schedule" button is disabled.
Selecting a different operation enables the button, so after switching back to M.A. I can finally submit the operation.