auto preview of sliders

Hi,  Just working my way round painter 2023, may be common knowledge but cant find the answer anywhere.

When I use the sliders the image on the screen wont preview the effect of the slider until my pen is taken off/mouse button released.  For instance when I'm using the slider to adjust the opacity of a layer,  I cant tell how opaque thats making the layer till its released.  I can of course keep clicking and then adjust with the keypad but its really annoying.

Is this normal?, in any tuition video the sliders work just how youd expect.

Thanks in advance