Unfortunately, it’s unstable.
I have to actively work with iCloud versioning because it can happen again and again that, for example, there is a crash between cut and paste and the document can no longer be reconstructed.
If I keep that in mind, I can cope with it quite well.
I’m sorry to hear that you have experienced instability in Dorico for iPad. There was a nasty bug that could result in the corruption of projects under some circumstances, but that has been corrected in the most recent version. Please make sure you are running version 5.1.70 (the current version at the time of writing).
I am prepared. This will not happen to me a second time. I took it as motivation to take a closer look at the app files on the iPad.