Neither of these two things are bugs in the sense that FOG is not capable of fixing them.
For UEFI boot, the escape key sequences aren’t built into iPXE. The only key sequence that is is the ESC key which is why it defaults to it.
The rEFInd config is default from the source itself, and it’s designed to allow you to configure your own needs as needed. While I could create a better config, it’s still very dependent on your own environment.