"Term size = win size" option
I Think this is the same issue i got..
Details can be found here..
http://logmett.com/forum/viewtopic.php?f=3&t=1068&sid=e66a863e76825eb140fd266f07c05211
I thought they would fix it in the new version.. Hope they fix this soon..
Upgrade to 4.65 or later, and uncheck "Clear display when window resized" checkbox in Additional settings dialog.
Tera Term: Terminal setup: Terminal size: "Term size = win size" causes very large amounts of white space to be printed to window when it is resized.
When the Terminal size is specified and this option is not checked, there is no problem. Having the terminal size be equal to the window size is a very useful feature, but this bug causes very undesirable results when the window is resized.