Audacity refusing to record when overdub is enabled 2

Audacity 2.4.2 from repo

I saw a previous post with similar problem, and tried the recommended solution, but it did not work.

Problem description: When I press record when any other track exists it records for a very very small amount of time and then stops it. The only way I can get Audacity to record when more than one track exists is to disable overdub (which is not a good fix considering I really need it).

I used pulse for both the recording and playback devices in the Device Toolbar.

I tried enabling and disabling ‘Software playthrough of input’ and ‘Detect dropouts’.

Thanks so much.