Heya and happy new year to you too :]
We are aware of that issue, yes; as a workaround, you should be able to enter those waypoints directly on the FPLN page (put the waypoint into the scratchpad, then press the LSK according to the position you want to enter it). Could you try this please? ๐
If that doesnยดt work, please give me a short list of some exampled which waypoints don't work.