Ah ok, glad it's not just me then.
Using the MCE remote and ehome receiver, MC works as expected.
Using it with Flirc, I just have issues I can't get past. I have also purchased Flirc's new remote, the Skip 1s, and although the handset is sleek, the software really doesn't seem to be release ready, and even fewer buttons work using that combination.
I have previously used a lot Flircs on media machines I have setup for customers, but these were purely to pass through custom keystrokes to run bespoke software that could not be launched any other way. I had no issues with getting this to work.
I have no idea how people are getting it to work for them as a standard RC setup for MC or MCE - the built in profiles don't seem to work and programming it doesn't work for many of the keys.
They also seem to have some issue with their database at the moment. Adding in remotes for Kodi (I've been experimenting trying to get any remote to work!) actually brings in commands for airflow and fan speed from an A/C unit. They have confirmed this issue, so I know it's not me!