Search error scrolling sometimes

While looking for something in Search, I noticed some errors that I did not get a screen of. At first I thought this might be NEXUS-8848, however, on repro attemp, I managed to see a different error.
I asked Kelly Robinson and he said infinite scroll stuff and to file new ticket.

This does not occur consistantly, however, I was able to get to happen two more times.
I populated my nexus mostly by building NX3 with NX3 then got this to occur by going into maven custom search and pulling the cursor to the bottom and then to somewhere in the middle.
The error then occurs when you mouseover any element.
If you move from one element to another, it gives two errors (guessing one for leaving one for arriving?).
Once this error occurs you cannot click into components (nothing happens) until you refresh.

Sorry that's sort of vague on steps, again it's not totally reproducable but got it to happen 4 times in one sitting.

Error occurs with Debug on and off. Here's the debug on JS:

[E] Ext.data.Store.getById(): getById called for ID that is not present in local cachelog @ baseapp-debug.js?_v=3.0.0-SNAPSHOT&_dc=1435182820896&debug=true:8086

baseapp-debug.js?_v=3.0.0-SNAPSHOT&_dc=1435182820896&debug=true:8086

Nothing in the nexus.log (at default levels) when this occurs.

I did not check older NX3 or NX2 at this time.