Its display bug.
Related also to missile range display.

Not sure about undocking, but:
-fitting the bot
-putting in charges
-quick relog

and it's fixed.

Still no changes

Reproduction steps of what you do and how you check the info would be very nice.

I've checked myself, but the harvested amount increase % in the harvester module info is properly updated, even when it's already opened when I equip the tuning module. (Or maybe it's been fixed since.)

So this only happens when the modules don't have any ammo loaded?

In that case it's hard to "fix" it, since in the case of miners, the yield depends on the type of ammo loaded (due to ore specific extensions and all that). When you don't have any loaded, it's hard to tell...

Ok, I could only reproduce something in the case of miners:

If you equip stuff in miner module - ammo - indy tuning order, then the mined amount info updates properly.
If you do it in miner module - indy tuning - ammo order, the info won't be there unless you reopen the equip window.

Same thing when you deploy with an empty miner module and load the charges there, though the mined amount bonus is applied, just the info is missing.

(#3608)