Curious issue I spotted yesterday: I had 2 Mad Scribblings that were unused for a while since I had a bad habit of selling Consumer goods in the post mission screen without remembering them (lol). Finally remembered to not do that, so queued those up in Workshop. Looking at the work report, it gave me a Loli Chainsaw and Irradiator.
Was quite happy with this after looking them up on the wiki, as I was training a silly melee Gnome as a meme build with N9000; went to immediately equip this in Hands > Inventory, did that with the chainsaw. But then, I clicked through my inventory over and over, thinking, Where Is this Irradiator? Looked up the image on wiki to make sure I wasn't hallucinating.
Most bizarrely, going to the Fence Goods/Shipping screen, it is there. I decided to ship it to my 2nd base in case that resolved it, but nope, same issue at that base, it is there, but never equippable. I did also double check to see if someone had randomly picked it up for use, but nope. It is also not researchable, though that's understandable as I'm far off the prerequisites.
Out of interest, I went back to the Auto-Geoscape save which was still just after that mission, tried queueing the 2 Mad Scribbles again. Gave a different result of Militarised Raygun and Kruger; and again, Militarised Raygun was not in the inventory equip screen, just like Irradiator, so it seems re-produce-able.
I also then backed up my save, and used Notepad++ to quickly grab the STR_IRRADIATOR from my second base into my first and change the quantity to 2. Still no luck. Sold one of the two. Still nothing. Really weird, seems to have almost completely prevented me from seeing them ever again (lol).