What I did: I copied/pasted a text which I had typed in MS Word into Agenda on my MacBook Air.
What happened: It synched with my iPhone but only 348 letters of 1147 total. I tried it several times but no change.
What I expected: To have it fully synched.
Things that might be helpful to know (Agenda version, OS and model, etc): Agenda 5.5, macOS Mojave V.10.14.5