Bug in Recipes/Auction

[Geomaticus]

Why is this recipe glowing? It is not a 'single-use' recipe, as far as I can tell. It is just a simple recipe, but the graphic is showing it glowing like a single-use recipe.

[Geomaticus]

Here are a few more recipes that are glowing for no apparent reason.
I thought that maybe it was because the programmers might have added a glow to those recipes that have bonuses to the heroes attributes, but that doesn't account for all of these examples....


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[isolde]

I ve noticed that too I thought it might be a more distinctive way to tell if a crafter already knows this recipe, but it isnt (one of the armorsmiths sees for example weapon recipes as glowing and jewelry recipes as normal).