Permanently close tool pane
Hi,
I used to be able to permanently close the tool pane. But recently, I bought a new laptop. After installing the Adobe Reader version 23.001.20143.0 I no longer can close the tool pane.
I tried the following setting. It is not working.

I tried to edit the registry but there is no there isn't any bExpandRHPinViewer.

Please advise what else I can do. Thanks.
