We did release a new version yesterday, and it could’ve triggered this bug. Did this bug start appearing recently?
From the information I gathered so far, I think it’s an interaction between the size of your document and the new update. If this is happening for everyone, I think we’re surely receive more reports than this.
This is easy to verify too. I see you only have one huge list. Can you try creating a new document (or maybe reuse the “Getting started with Dynalist” document if you still have it) and see if the same bugs happen over there?