connecting to linux machines not working as it should

[tamirh]

hi guys,
im facing a problem with proper connection to linux based servers.
the color scheme looks not good, symbols not appeering as it should and some keyboard keys and bindings are not working.
for example using tmux and vim, not showing the correct colors and the ALT key is not wokring.
my Emulation settings are set to LINUX with ANSI Color checkbox selected.

using other SSH clients are working fine.
any ideas?