v 3.? (...waiting to unfreeze so I can double check) 3.3.4
Not a "hardware thing" (all due respect Robert). Started happening after upgrading from 3.0.2.
It's not necessarily a keyboard shortcut thing either. I tried manually copying (right click --> copy), and same freezing behavior. This is occurring specifically copying and pasting elements in a Pro layout. I bet it's other scenarios too, but I immediately found this post after a month of this behavior and Googling "Keyboard shortcuts ArcGIS pro freeze".
It's a bug and it's debilitating to recreate element settings instead of just copy/pasting. For instance fonts, spacing, whatever.
Any solutions?
Zach