When loading FLAC into spek and using the 'c' key to change channels, it appears that the channel number at the top changes, but the graph does not change -- it reloads channel 1 every time the 'c' key is pressed.

It appears this is true for FLAC files with any number of channels. To compare, I loaded the same FLAC file in multiple instances of Spek and selected a different channel in each instance, then overlaid the images to see that they were indeed identical.

Is this a bug? Or perhaps I am not aware of a setting or other limitation related to FLAC files?