Yes, apart from a few "toxic" plants such as Foxglove, experience has shown me that small amounts of unsafe foods are possibly OK. Not that I think any of them should be recommended even in small amounts, but I think it's a case of it shouldn't cause too much panic.
I remember a couple of weeks ago I caught one of mine very happily eating Allium leaves that, unbeknown to me, had self-seeded itself next to the rabbit run. The Allium has a very pungent garlic-type smell and he was extremely disappointed when I removed all trace of it. He was watched very carefully for several days and strongly encouraged to eat loads of hay, but I saw no ill effects.
Unfortunately with some toxins you will only need to get it wrong once and in a relatively small amount. That's why, when there is so much that is safe and easily identifiable, I try to steer clear of anything where there is the slightest doubt.
You've presumably read this
https://www.harcourt-brown.co.uk/ar...rabbits/plant-toxicity-the-problem-with-lists