In ver 1.0.8869.0 I cannot resize Telnet window.
On my other computer I run 1.0.8841.0 and resize works fine.
I discovered the problem after I had to reconfuigure. My ini-file had disappeared, and so had the backups of it. 
Furthermore it looks like a patch is left in the Filters section in the Telnet window. Patch covers 
part of the two Clear buttons. This is in the ver 1.0.8869.0. Ver. 1.0.8841.0 is fine.
73 de Knut LA9RY