Here’s how to reproduce:
Take two accounts A and B.
- A: Creates notebook. Publishes
- B: Forks notebook. Adds
something = 1. Publishes.
- A: Adds
something_else = 2. Publishes.
- B: … -> compare -> … -> compare reverse -> apply -> merge. Publishes.
- A: Changes
something_else = 4. Publishes.
- B: … -> compare -> … -> compare reverse
B is now stuck with a message " Comparing notebooks. To merge these changes, [compare to the latest fork version]."
However the link in this message is only leading back to the current page.
This fully breaks further merges from happening.
An example of this behaviour can be found at: