Mixed groups of iron blocks and iron nuggets have odd crafting results

Tested and reproduced with
1 iron block
17 iron nuggets

When holding a mixed group of materials to convert to iron ingots, the total possible number of ingots will be shown in the crafting menu regardless of ability to actually craft them in the inventory interface.

e.x. holding 1 iron cube and 9 iron ingots will show that you can craft 10 iron bars if you look at the crafting list from regular player inventory. Attempting to craft the iron bars will only produce 9 though and the entry to convert to iron bars disappears, as the player inventory doesn't have the space to combine the nuggets. The entry re-appears at the crafting table and allows conversion as normal.

I have not tested if this remains true with gold blocks and nuggets