Lync/Skype for Business Message Limit

Maximum frustration alert!

Lync (Skype for Business) has a maximum message size limit for instant messages:

This message is too long.

The limit cannot be configuredĀ and has a bizarre maximum of 800 characters for the first message and 8000 characters for subsequent messages to the same recipient. What? Why? How? Confusion and frustration ensues.

I actually enjoy using Lync but this one unresolvable minor irritation is spoiling the entire experience every time I want to share text with my colleagues.