The width of the External system log servers field at System > Maintenance > Troubleshoot > Logging Settings is too narrow. It often truncates the hostname/port making it more difficult to enter and verify the setting.
The field should be widened, and the Protocol field shrunk (if necessary).
I have queried our RnD departament, they unfortunately were unable to advise me of an ETA, however it is on their agenda to perform this cosmetic change.