Apple Notes Is Disappointing Me (Or Perhaps It's iCloud?)

I have decided to use Apple Notes to log stuff in my life, with the promise from Apple that, firstly Apple Notes sync across my iPhone and my Mac, and secondly, I can manipulate notes using Shortcuts. I've created a new Shortcut on my iPhone that asks for a line of text input, and the Shortcut will then append the current timestamp and that line of text into an existing note. This is working fine, as far as I can tell, on my iPhone. However, every night, when I reach home and open up the Notes app on my Mac, I discover that sometimes, the last line of the note is missing on my Mac. I'll have the timestamp, but no text that follows. Sigh. I don't often have issues with iCloud syncing, but this reminds me that it is still not perfect. (And now I am looking for other ways to quickly enter and sync my logs. Maybe I'll try the Journal app.)