New "Name square" mode in coordinate trainer does not save score after refreshing

[hb20007]

Exact URL where the bug happened https://lichess.org/training/coordinate#name

Steps to reproduce the bug

1. Play the new Name square coordinate trainer and get a score.
2. Refresh the page

What did you expect to happen? The score and average score should be saved, like the Find square mode.

What happened instead? The scores with white and black are lost after refreshing the page

Operating system and browser version Windows 10, latest Chrome

I have played the Name square mode as white and I can see the graph with my scores:

After refreshing the page, the graph is gone:

For reference, the correct behavior can be seen in the Find square mode: