Like the title says, "new unlocked item" icon on crafting menus (player, assemblers, chemical plants etc) shows up on menus of irrelevant assemblers.
Let me show you the example:
Here's crafting menu for player. You can see that processing unit and electric engine are new unlocked items and there's also small yellow "new items" icon at top left corner of "intermediate products" tab:
![Image](https://forums.factorio.com/images/ext/a52b8ea527e18bf197250b568893d0c0.jpg)
But same icon shows up on crafting menus of chemical plant and refinery and won't go away until you hover over those items on player crafting menu.
Here's refinery crafting menu, notice the icon:
![Image](https://forums.factorio.com/images/ext/550b5ace8c0dec2e2f4e23284253ce61.jpg)
And here's chemical plant, notice the icon:
![Image](https://forums.factorio.com/images/ext/e0095fdb56a741893f8c740bb115533e.jpg)
I've added log file, not sure if it will be useful or not.