recording in wrong track

Audacity is recording to a different track to what I command.

On switching on I select mono track to record on.

I then press record button to record an instrument - a new stereo track appears below and starts recording from the beginning.

I stop and add a new mono track below - then move the cursor to the beginning of this track - but when I press the record button , the recording starts at the end of the previous stereo track labelled it as track no 2.

I thus cannot perform any multi tracking.

I am using Windows 11 Home version 21H2 dated 1.11.21; Audacity Version 3.1.2 downloaded from the Audacity website.

I believe there is one other similar issue reported.