Nothing want to function as intended.

[TallyNice21]

The photo shows where the mouse/problem is located.

Whatever I do.. I cannot use basically anything in the effect controls when it is in "small window" but once it is enlarged "only shows that window" it can be usable. I'm finding this a bit of inconvenience. 
Premiere Pro 2021.

[Ann Bens · Accepted solution]

There is an issue with nested audio which cause not being able to twirl down the properties, if so: delete nested audio or disable Show Audio Waveform.

Please next time take a proper screenshot.