The bar can't move in animator editor?

I hold the bar and move, but it's doesn't work in 2020.1beta
This problem is not happen in 2019.3.6f1

5738920--602785--upload_2020-4-20_22-48-57.png

Could you please check if this issue still occurs for you in b7? If so, please submit a bug report for it with reproduction steps attached to it.