Keyboard paring failures, still

Still struggling with this. I have posted here
https://github.com/bluez/bluez/issues/55 as well. I cannot figure out
why/how it eventually pairs, but I have to type in the provided code
many many times and then inexplicably it pairs. The latest Arch
package is 5.58. I have also built the latest from git and get the
same thing. There was a comment that maybe a couple commits seemed to
fix it for another user, but not for me. Is there anything I can do to
help get this resolved? It is pretty strange that I can pair a phone
for audio, but not a keyboard, one of the earliest BT devices... It
does not seem to be the particular keyboard. I've tried 2 different
ones and get eh same result: Failed to pair:
org.bluez.Error.AuthenticationFailed

Keith