Double click on top window bar doesn't make window full-size
It is a spec.
Yes it is a spec "Double clicking the left button on the title bar" but it still doesn't work so the ticket should not be closed.
You said "full-screen." Is it normal behavior of Windows dialog?
Tera Term doesn't so. Go Setup-Terminal, and check off "Term size = win size", and change column/row count, and push "OK." "left double click" title bar toggles between "Term size" and "win size."
Is this ticket a change request of current behavior?
Yes I believe it is normal behaviour. Try it with e.g. Windows Control Panel or Windows Explorer.
However I have tried your example and re-read the spec - I admit I interpreted the spec incorrectly. So yes, what I was proposing would be a change of current behaviour. As many people probably expect this behaviour it would be foolish to change it, so keep the ticket closed.
Sorry to have taken up your time..
I understood your request.
This behavior is a spec, at least from Tera Term 1.2, since 1995.
Thank you for description about your request. This ticket is kept closed.
Double-clicking a window's top bar should make it full-screen (or return to original size if already full-screen).
I am using Tera-term on Win 7 and this feature doesn't work.