Strange window display

I am building a new workstation -- running Ubuntu 16.04 -- to replace an old and failing workstation. I used the TDE ISO to get 'things' started.

Several of my programs are displaying in a weird window format. (I am not sure if attachments are permitted, but) Attached are a couple of examples

Display_OK.png --- is a zenity --info --title=Display_OK --text="Hello World" running on my "failing" workstation.

Display_snafu.png --- is the same zenity --info --title=Display_OK --text="Hello World" running on the new workstation.

Bluefish_snafu.png --- is bluefish running on the new workstation.

I see the same for the AisleRiot solitaire program.

No doubt it is something "simple", but nothing comes to mind.

Thanks in advance, Jonesy