When you click on an "incoming" loader , the one that loads a chest, there is no gui so you cant set rules für network signals.
but you can copy them from inserter... so not a real bummer but somewhat inconvenient ^^

This is a Factorio bug. Turn the loader to output, set your filters and conditions. Then switch it back to input.

I have reported this here: https://forums.factorio.com/viewtopic.php?f=7&t=116297

Apparently this will be fixed in 2.0.9. Nice.

I'm trying to swap inputs and outputs and use the filter settings in the circuit, but it won't filter as instructed.
Should I wait for 2.0.9?

filters work fine for me. i did the direction swapping thing and it just works

I have reported this here: https://forums.factorio.com/viewtopic.php?f=7&t=116297

uhhh nice. =)

I have reported this here: https://forums.factorio.com/viewtopic.php?f=7&t=116297

uhhh nice. =)

Thank you.
Can't wait for the update.

This has been fixed by Wube. There are some caveats though. The gui is available, but input loaders will ignore filters entirely. This is the the current implementation in the game engine.