NIP-46 Bunker signing can definitely be a crapshoot. I have had some success with it via Amber and Olas. Indeed, I am posting this note using Amber as my bunker signer on my phone while using Coracle.social as my client on desktop and it has been working well.

That said, I still use #Amethyst for posting and browsing kind 20 notes most of the time. Olas is starting to get better, though.