This is an important one! I found a bug on version 1.08 that could cause packets to get dropped on some occasions, if the packet queue was filled in certain way. The problem is only present on version 1.08, but if your RNode is on a lower version, I'd recommend that you update anyways!
The firmware update can be applied directly with RNode Config Utility or by just downloading it directly and flashing with avrdude or another flashing program of your choice.
RNode Firmware Update 1.09