After searching for characters with a name like "cross" it is possible to change the font, which is an awesome feature. But in case one font has more results than another, the selection in the character table is updated automatically. When this happens the hexadecimal and decimal fields are not updated showing the wrong value. For example, searching for 'cross' returns three items in case of Liberation Serif, the third character is U+1DA8, and switching to Biolinum it still shows this value though another character (the second because the font contains only two crosses) is selected automatically. Manually clicking updates the fields to the correct value of U+2DF.
Though shall not report before testing. The issue has been solved.