I can see a good selection of my subject when I use select subject, but when I place in new layer (conrol + J) abbreviated background comes along. Same issue if after the selection I use select and mask, no matter what output I choose.Thought it might be an issue with the latest update so uninstalled and went to version 22.2. Never had this issue before. Using Dell laptop with Windows 10 and no recent changes.
Could you please post a screenshot taken at View > 100% with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible?
We really need screenshots to help you.
Did you attach or insert the screenshots?
As a Work-Around you could
• Select > Reselect
• Layer > Layer Mask > Reveal Selection
What have you done for all-purpose trouble-shooting so far?
Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point: