Gold Blocks and Iron Blocks when mined with a Silk Touch Pickaxe, produces a Gold/Iron block as expected. However, when these blocks are mined with any pickaxe they produce a single block instead of ingot(s).

When I mine a Gold block or an Iron block in 1.13 with a Silk Touch Pickaxe, it produces a Gold block or Iron Block as expected. However, when I try to use any Pickaxe to then mine these new acquired blocks to produce Iron or Gold ingot(s) it produces a single Gold or Iron block instead of ingot(s).