QtShark (wireshark-qt) doesn’t use the saved preferences

QtShark doesn't use the preferences I set.

The preferences file gets altered when using the preferences gui, but the values are completely ignored.

Manually editing the file doesn't work either.

[email protected]:~$ qtshark
FIX: packet list heading menu sensitivity 
/usr/local/lib/libwireshark.so.0: undefined symbol: py_create_dissector_handle      
14:25:21.435  Dbg  plugin_dir: /usr/local/lib/wireshark/plugins/1.9.2-SVN-48274     
14:25:21.473  Dbg  FIX: timestamp types should be set elsewhere                     
14:25:21.473 Capture Msg  Capture Interface List ...                                
14:25:21.473 Capture Dbg  sync_interface_list_open                                  
14:25:21.473 Capture Dbg  sync_pipe_open_command                                    
14:25:21.500 Capture Dbg  read 9 indicator: S empty value
14:25:21.501 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.501 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.501 Capture Msg  Capture Interface Capabilities ...
14:25:21.501 Capture Dbg  sync_linktype_list_open
14:25:21.501 Capture Dbg  sync_pipe_open_command
14:25:21.536 Capture Dbg  read 9 indicator: S empty value
14:25:21.536 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.536 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.536 Capture Msg  Capture Interface Capabilities ...
14:25:21.536 Capture Dbg  sync_linktype_list_open
14:25:21.536 Capture Dbg  sync_pipe_open_command
14:25:21.565 Capture Dbg  read 9 indicator: S empty value
14:25:21.566 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.566 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.566 Capture Msg  Capture Interface Capabilities ...
14:25:21.566 Capture Dbg  sync_linktype_list_open
14:25:21.566 Capture Dbg  sync_pipe_open_command
14:25:21.597 Capture Dbg  read 9 indicator: S empty value
14:25:21.598 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.598 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.598 Capture Msg  Capture Interface Capabilities ...
14:25:21.598 Capture Dbg  sync_linktype_list_open
14:25:21.598 Capture Dbg  sync_pipe_open_command
14:25:21.651 Capture Dbg  read 9 indicator: S empty value
14:25:21.652 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.652 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.652 Capture Msg  Capture Interface Capabilities ...
14:25:21.652 Capture Dbg  sync_linktype_list_open
14:25:21.652 Capture Dbg  sync_pipe_open_command
14:25:21.689 Capture Dbg  read 9 indicator: S empty value
14:25:21.690 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.690 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.690 Capture Msg  Capture Interface Capabilities ...
14:25:21.690 Capture Dbg  sync_linktype_list_open
14:25:21.690 Capture Dbg  sync_pipe_open_command
14:25:21.729 Capture Dbg  read 9 indicator: S empty value
14:25:21.729 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.730 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.730 Capture Msg  Capture Interface Capabilities ...
14:25:21.730 Capture Dbg  sync_linktype_list_open
14:25:21.730 Capture Dbg  sync_pipe_open_command
14:25:21.778 Capture Dbg  read 9 indicator: S empty value
14:25:21.779 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.779 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.779 Capture Msg  Capture Interface Capabilities ...
14:25:21.780 Capture Dbg  sync_linktype_list_open
14:25:21.780 Capture Dbg  sync_pipe_open_command
14:25:21.825 Capture Dbg  read 9 indicator: S empty value
14:25:21.826 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.826 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.826 Capture Msg  Capture Interface Capabilities ...
14:25:21.826 Capture Dbg  sync_linktype_list_open
14:25:21.826 Capture Dbg  sync_pipe_open_command
14:25:21.863 Capture Dbg  read 9 indicator: S empty value
14:25:21.864 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.864 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.864 Capture Msg  Capture Interface Capabilities ...
14:25:21.864 Capture Dbg  sync_linktype_list_open
14:25:21.864 Capture Dbg  sync_pipe_open_command
14:25:21.914 Capture Dbg  read 9 indicator: S empty value
14:25:21.915 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.915 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.915 Capture Msg  Capture Interface Capabilities ...
14:25:21.915 Capture Dbg  sync_linktype_list_open
14:25:21.915 Capture Dbg  sync_pipe_open_command
14:25:21.985 Capture Dbg  read 9 indicator: S empty value
14:25:21.986 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:21.986 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:21.986  Dbg  FIX: fetch recent color settings
14:25:21.988 Capture Msg  Capture Interface List ...
14:25:21.989 Capture Dbg  sync_interface_list_open
14:25:21.989 Capture Dbg  sync_pipe_open_command
14:25:22.026 Capture Dbg  read 9 indicator: S empty value
14:25:22.027 Capture Dbg  sync_pipe_wait_for_child: wait till child closed
14:25:22.027 Capture Dbg  sync_pipe_wait_for_child: capture child closed after 0.000s
14:25:22.031 Capture Dbg  sync_interface_stats_open
14:25:22.031 Capture Dbg  sync_pipe_open_command
14:25:22.169 Capture Dbg  read 9 indicator: S empty value
14:25:22.171 Main Info Wireshark is up and ready to go

What goes wrong?