Steps: Start Xojo and create a new (Desktop) project
Click on Feedback-icon in Toolbar
The This application has encountered a fatal problem and must be shut down. Dialog is shown
A click on Report Now does nothing, the IDE takes 100% CPU
I can’t replicate that here on macOS Mojave with Xojo 2019r1.1 but I have Feedback 2018r1.1 installed whilst you are running Feedback 2018r1.2. That version was withdrawn or only made available as a beta or… something, I forget now, but maybe try downloading Feedback 2018r1.1 from the website and see if that fixes it.