Problem with preset LrC v12 Mac OS 12.6

Hello,

few days ago, I have tried to create a new preset.

After this, when I click on EVERY preset on the left bar in Develope mode, nothing work.

When I move my mouse on the preset I can see the preview, but if I click on the preset, the preset doesn't work.

There is just one way for apply the preset: 

- Library page

- click on "Saved Preset" under the histogram

No one else has encountered this problem?

Thanks for the help.