it happens in sFTP Client Pro 3.3.19 with windows and linux systems.
For example if a type '123_567' it shows in '123 567'
I use Spanish locales/languagaes in both system. Any way to fix it ?
it seems a problem with fonts of MS Windows. In Linux i have uninstalled package "ttf-mscorefonts-installer" and it works again.
As this is an OS font issue, we've now closed this issue.