Buttons missing from Help

When using TCC, I press F1 and it brings up the Help program. The minimize, maximize and close buttons are not there:




But, if I put the mouse cursor over the spot where the button is supposed to be, the "tool tip" appears:



If I run the "eViewer.exe" program directly, or launch it by clicking on the "TakeCommand.ewriter" file, then the minimize, maximize and close buttons display normally.

I have observed this behavior in TCC versions 29 and 30.