i9 14 core
NVidea Titan Pascal
The short cut shift+F1 for append only allows you to get to the top of the .blend file stack. You can not get below that to find the particular article/object etc that you are looking for.
File append works as normal.
Checked and reported by 4 people of same facebook group.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).