As I mentioned in the below link. When you create a new legend patch from a feature, and apply it in your layout. your ArcGIS pro will crash every time when you open your project. This bug could be triggered 100% in my computer. If it's necessary I can provide a screen video to show the progress. Also, I have sent reports to ESRI every time.
Hi @Alvis_D
Thanks for sharing. No need to create additional posts.
Please contact ESRI technical support. They can explore the issue and lodge a bug with the development team if applicable, or attach you to an existing one if the issue is already known.
Anyone encountering this issue, or other potential bugs, should be contacting ESRI support. It lets them know and track impact of these issues. You can also track the bug status this way.
Sending error reports is NOT the same as contacting technical support. It's a developer feedback tool and they will rarely contact you back. I'd encourage you to send reports, but still contact support if the issue keeps happening.