My sidepane index has more entries than the Gtk.Treeview can show. Now with Zim rev447 when I click on an entry, the Treeview is *always* scrolled so that the selected entry is about 10% above the bottom of the sidepane. This is annoying e.g. when jumping between 2 pages which are little more than 10% apart in the index, since the lower of them scrolls out of sight whenever the upper is clicked.
I checked rev437 which does not show this misbehavior. I hunted down this bug to the call of self.scroll_to_cell() in /gui/pageindex.py:select_treepath(). Surprisingly this method did not change since rev437! But I think it was not called in rev437 when an entry was clicked. I guess rev447 now calls it to change the current entry to bold (new feature).
As a workaround I changed the parameter "use_align" to False. Now my sidepane is scrolled as seldom as possible, which is nice IMHO! I understand what "use_align=True, row_align=0.9" should do, and I consider the current behavior as a bug of Gtk.TreeView.scroll_to_cell()! Nevertheless I vote for my workaround, since I prefer when such automatic scrolling only occurs when it is really necessary.
This bug can be quite an inconvenience at times.