ToDo Notes freeze when opening in iOS

I've been stumbling along with ToDo ever since they murdered my beloved Wunderlist. My intent is to use the Notes section of ToDo as my personal knowledge base, so some individual notes can become quite lengthy and include multiple URL links.

Maybe this is too ambitious of a use case for ToDo? When I try accessing some of the longer notes, the entire app freezes. I can access that same note on my laptop (OS X) without a problem.

Anybody else seeing this? If so, any hints as to what's triggering the freeze?