Indesign version 20.0.1

When highlighting the desired text that I wish to apply the paragraph style to and clicking on the preferred paragraph style. The click animation attempts to very briefly 'grab' the style rather than select it. This works on any paragraph style I try.

I have a similar issue when selecting a colour swatch to apply, the only option is to grab and drag the desired swatch to where it is needed.

I also cannot change the font when selecting the text I wish to change and selecting a font from the drop down.

This is only a recent issue for me that I have experienced over the past week or so.

I have tried using older versions of Indesing such as 19.5 & 19.4. And am still having the same issues.