Poderosa

Usually, happens when mixed cmd.exe/bash scripts are run and you try to
stop them with ctrl+C.
In effect ctrl+c nor ctrl+z stops working and you are unable to terminate
app - you need to kill terminal.

To reproduce run cygwin session.
Then type: cmd.exe
Then type: cat
Then type: ctrl+z
<here cmd.exe is killed and bash session returns>
Then type anything - no response


Possible cause might be lack of support for cmd.exe. In above scenario
cmd.exe might be still alive stealing input. Currently, poderosa is unable
to kill cmd.exe with keystrokes. Fixing this could fix this issue.