I'm very sorry this is causing you trouble. Could you please send us the document or a screenrecording via support@mindnode.com, so our engineering team can have a look at it?
Thank you for making us aware of this! This sounds like a bug. Could you please reach out to us via support@mindnode.com so we can have a closer look into this issue. It would be interesting to know which MindNode and macOS version you're currently using. Thank you!