I have Actually Additions crates set up as buffer chests with one acting as an input with a satellite pipe and the other as an output with a chassis containing crafting modules. This works almost everywhere, but I've discovered two that don't. The ingredients get dumped into the input crate, they're pushed through the machines, and then into the output chest, but then they just sit there while the chassis pipe continues to shimmer. If I take the crafting modules out and put them back in again everything gets pulled out as they should, but, for whatever reason, this doesn't happen unless I take this action. The first pipe I discovered this behavior hasn't exhibited it again since I did the pull-and-replace, but the second pipe seems to do it pretty regularly (I haven't yet noticed if it's every time).

Here's an imgur gallery that shows what I'm talking about: https://imgur.com/a/DGwznZQ