When expanding e.g. the table folder in the object browser, the scrollbar does not appear even if the full table name can not be seen in the browser.
Logged on as e.g. SYS, even if the table name apply$_auto_cdr_column_groups is too long to be viewed in its full length (last 4 characters can not be seen), no scrollbar is shown. Only when the folder window is narrowed so e.g. table name ado_imsegtaskdetails$ is truncated, the scrollbar appears.
There seems to be same problem with content browser in program window, e.g. when viewing package header for SYS.standard. E.g. method SET_TRANSACTION_USE, which does not show scrollbar when the last ..SE is truncated. Only when the last ..USE is truncated, the scrollbar appears.