In various areas in the sidebar, when there is not enough space for a string, ellipsis is used, but when I hover over it with my mouse, I expect to see a tooltip showing me the entire string, so I don’t have to make room for it to see what the string is. This is common UI pattern, which is missing in Xobni.
Sample for such problems can be see in panes titles (such as “People connected to…”, “Conversation with…”), messages subjects and some more.
Xobni makes excessive use of “what’s this” tooltips at the upper part of the sidebar, explaining each of the items, and also when the links for a person (“schedule time with…”, “e-mail…”) are truncated in a narrow sidebar, the tooltip shows their full text, but that’s less important. The count in the end of a pane title, or a message’s full subject is much more important, and for this, Xobni fail to show tooltips.