Odd font-awesome icon behavior

For some reason the font-awesome icons seem to change — I wonder if it is using the wrong key or looking at other baselines to display them. These are all screenshots for the same baseline — note how the icons change. Here is the link to the dummy cluster.

Here’s what the icons should be, which I was able to get by first clicking on the 36 inch conveyor one, and then switching to the baseline above it — almost like the page is one model behind in terms of icons: