Problems with Lumetri Panel

I am having two ongoing issues in PP 25.2.3 specific to the Lumetri Color panel. 

The first thing is, when I first open a project and have a clip or adjustment layer selected in my timeline and begin moving sliders on the Lumetri Panel, there is no change to the image. If I deselect that clip and reselect it, all the sliders in Lumetri are reset to zero, i.e. all the changes have not taken place. I then try a second time, and it works as expected. 

Second is that the scroll bar on the right of the panel does not work. If I have a larger sub-panel open, such as Creative, I cannot grab the scroll bar to move down to settings below the fold. I have to use the scroll wheel on my mouse. Since I edit with a tablet, this means I have to put my pen down, grab my mouse and use the scroll wheel to scroll up or down within the Lumetri panel. This is exceptionally onerous. I also cannot grab the scroll bar with the mouse, it is ONLY the scroll wheel that works to navigate up or down within the Lumetri Panel. 

So, two issues:

ISSUE ONE:

1) In a newly opened project, select a clip in the timeline

2) In the Lumetri Panel, begin making adjustments to sliders

3) Expected result: changes would be reflected in the Program Monitor.

4) Actual result: no changes are reflected

5) Deselect and reselect clip, and no adjustments have been saved to any values

6) Make changes again and now they take

ISSUE TWO:

1) In Lumetri Panel, open one of the sub-panels

2) Grab side scroll bar to navigate down to see further settings

3) Expected Result: scrolling down as you move the scroll bar

4) Actual result: No movement

5) Use mouse scroll wheel to scroll up or down instead

PP v 25.2.3

Windows 10.0.19045