The Objects window after Trace Bitmap is a narrow slit not possible to work with: Is it a bug, my error? Attached is a screenshot; look in the upper right.

If you can advise or suggest a workaround I would appreciate it.

I am using Inkscape .92.3 in KDE Neon based on Ubuntu 18.04 Linux with a hi resolution LG monitor.

This is my second time climbing the learning curve of Inkscape.

This time I am working with maps and want to bring in and simplify bitmap maps for educational use

Here's the screenshot.

No Linux user here - I guess "Trace Bitmap" lives under the "T" tab in your screenshot. Hit the title don´t brings it to front or closing all tools on the right and call just ""Trace Bitmap" doesn´t change anything?

The docked dialogs have a number of issues, across platforms. 
https://gitlab.com/inkscape/inbox/-/issues?scope=all&utf8=%E2%9C%93&state=opened&search=resize+dialog

To see a specific dialog better, un-dock it or close other dialogs.

Thank you very much.

I just undocked a dialog for the first time, expanded it and can get to the insides.

So this workaround is the solution I needed.😊