Timeline Blend Curve Display bugged

Im trying to customize the blend curves of timeline clips.
Sadly the Curve editor (The small and the undocked version) is zoom in to a unsusable level and cant be unzoomed.
only using the presets work.
Is there wany way to get it fixed?

Unity Version 2019.3.0f3
Timeline Version 1.2.9
Reproducible in a new / empty project.

5349381--540225--upload_2020-1-8_15-28-29.png

Hello.
I have encountered the same trouble. It can be reproduced in a new project.
The problem occurs with Bend Curves in the Chinemachine Track.

Unity 2019.2.19 f1
Chinemachine 2.5.0