I've been suddenly having trouble posting comments that are priced at 1 sat. I also tested with zaps, and 1sat zaps fail as well. They seem to fail instantly, and show canceled in the wallet history & on AlbyHub (running on my Start9). However, there is no record of the TX failing (or even attempting) in the lightning node itself.
Bigger payments do work, and I tried a 2sat zap which did work. I don't comment too often, but I zap every day, and my zaps are well above 1sat, so I didn't notice until I wanted to write some comments today and they all came back as failing...
Has anyone else seen this? Is there a setting that I somehow messed up? It's odd that the 2sat zap went through fine, and much bigger payments have been working without issue (both outgoing and incoming), so it's not a liquidity issue.