Streamtuner2 may still crash randomly when changing channel tabs.

Gdk:ERROR:/build/buildd/gtk+2.0-2.24.23/gdk/gdkregion-
generic.c:1110:miUnionNonO: assertion failed: (y1 < y2)

• Hard to reproduce, happens somewhat rarely.
• Only happens on mouse interaction, not <key>↓</key> <key>↑</key> interaction.
• More prevalent after startup. Albeit I've noticed it once with lengthier residence of ST2.

It's still hard to tell where this arises from.

• Certainly related to threading. Doesn't happen in --nt mode.
• The window title updating may be one cause.
• More likely is the current_category() selection or initial drawing in channels/__init__ though.
• Columns() doesn't seem to be the cause. It's uikit.do() wrapped consistently now.

Well, that's not very telling either:

./st2.py:524: GtkWarning: gtk_list_store_get_value:
  assertion 'VALID_ITER (iter, list_store)' failed
  gtk.main()
./st2.py:524: Warning: g_object_set_property:
  assertion 'G_IS_VALUE (value)' failed
  gtk.main()
./st2.py:524: Warning: g_value_unset:
  assertion 'G_IS_VALUE (value)' failed
  gtk.main()
Fatal Python error: Segmentation fault

Current thread 0x00002b8da5ef1a80 (most recent call first):
  File "./st2.py", line 524 in main
  File "./st2.py", line 535 in <module>
make: *** [run] Speicherzugriffsfehler

(But that was just the search function updating columns() anyway).