No option to change custom status message for 'online'
There is no way to change a status message when setting a custom 'online' status for a contact.
The option "ask status for online" isn't checked: if I want to change my global 'online' status message I can use 'change status message' button, but there is no such button for custom status message
I've read the 4762 ticket and I agree that this option should honour global settings, nevertheless an option "Change Status Message" should appear too