Kalguur Ore to Ingot when no smelter is assigned to that ore type

Im tyring my absolute best to upgrade my town, which currently requires 200 Bismuth Ore. I usually collect enough ore during a session, however I either forget to go back to kalguur, or used up too much gold during my session to get the upgrade before I log out. When I log back in hours later, every ore I collected is now the ingot version and it is preventing me from upgrading my town any further. I have seen a few others say that completely removing all smelters from any jobs will resolve this, however this still feels like a major bug.

https://imgur.com/a/b271sqz

It's not a bug if the info tooltip explains that is how miners/smelters works. Either farm enough ore in a single session to bypass the need to remove all smelters, or remove all smelters, finish upgrades, then assign them back.

You're not losing any ore by letting it pool up. And you're not spending gold on idle smelters.. you only pay them when are actively smelting anything. They arguably shouldn't have added raw ore upgrades at all, but that is the state we were given and we're probably too far into the league for them to change it now.

I'll take the current state over having to constantly move my smelter/miners around based off how many ores I get in maps.