Nice one, Yozzo.
From Blender 5.1 you will be able to reset Shape Keys to the default of 0.0 too.
This means you can hit backspace and clear the shape keys really quickly.
Super handy when creating corrective shapes.
That was fixed by some new developer who has the same name as me.
They also happen to share the same body as me too.
(it was me – I fixed it)