Text disappearing while typing

I’m experiencing some weird and irritating text-entry behavior OF2.

Once or twice during every OF2 session, while typing new task description, or editing an existing one, the entire line, or a large portion of it, will disappear as if it were selected and deleted. Forcing me to retype the now missing line. I only see this behavior in Omnifocus, none of the other text entry apps I use daily exhibit this behavior.

Has anyone else seen this, or possibly know how to fix?