WP 5.7 + GenerateBlock Reusable block issue

Hi, after update to wordpress 5.7 i have notice that reusable block created with generateblocks (button block) went unusable. When i try to edit block the contextual menu dissapear as soon as try to hover cursor on it.

Attach short screenscast.

I have same behaviour on 4 sites.

Any suggestion?

I have tried many thing including :

  • Go to single reusalbe block post and re-save it

  • Save post that contain reusable block

  • Reinsert block

Nothing solve.

Screencast :

https://web.tresorit.com/l/9DxG1#6oa7OKCjs7dH-9phaHXGrg

Not able to reproduce this on my end.

Does it happen with any of your other reusable blocks? What about with your other plugins deactivated?