Description of problem:
Encountered after adding Catalina to ibus as part of test case #1 here:

https://fedoraproject.org/wiki/QA%3ATestcase_ibus_bridge_hotkey

Version-Release number of selected component:
ibus-setup-1.5.7-2.fc20

Additional info:
reporter:       libreport-2.2.2
cmdline:        python3 /usr/share/ibus/setup/main.py
executable:     /usr/share/ibus/setup/main.py
kernel:         3.14.4-200.fc20.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
enginetreeview.py:138:__name_cell_data_cb:AttributeError: 'NoneType' object has no attribute 'get_language'

Traceback (most recent call last):
  File "/usr/share/ibus/setup/enginetreeview.py", line 138, in __name_cell_data_cb
    language = IBus.get_language_name(engine.get_language())
AttributeError: 'NoneType' object has no attribute 'get_language'

Local variables in innermost frame:
it: <GtkTreeIter at 0x1551400>
engine: None
self: <EngineTreeView object at 0x7f6c3d7a4a50 (EngineTreeView at 0x1724380)>
celllayout: <TreeViewColumn object at 0x7f6c3d7b6aa0 (GtkTreeViewColumn at 0x1729920)>
model: <ListStore object at 0x7f6c3d7a49b0 (GtkListStore at 0x171f930)>
renderer: <CellRendererText object at 0x7f6c3d7b6c80 (GtkCellRendererText at 0x1448990)>
data: None