So the 2 things I noticed so far:
1 - After installing the mod and loading a save, most items in the ship's cargo do not get their stack size changed. This is mainly for ammo, and items that normally don't stack. Not sure if this is actually a bug, but thought I'd mention it still.
2 - Some items get assigned a stack size that does not correspond to any of the settings in the mod. Example: For me gunpowder's stack size turned to 10, but I had no category that was set to 10. After I saved and loaded my save again the stack size changed to the one in my setting.

I have the same issue with gunpowder stack size as well. Some stuff is effected by the stack variables, while other items are not.

Thanks you for your reports.

I will look into individual items and why they are not getting updated.

In ongoing saves values are read from base config instead of mcm on launch
so you need some reloading before it actually decide to load from mcm
some values don't change like trade goods or ammo
in new save values of ammo are set properly but some values
like for example gunpowder others mentioned are set to 10

Found the issue about game not loading MCM settings. It was my fault, I was checking for the wrong path. Fixed in the next update

Also, gunpowder seems to be classified as "trash", so its stack size will be according to the one set in that category.

Regarding the update of the values, in version 0.9.0 there's not the "AfterSaveLoaded" hook, so I currently update configuration when you save config using MCM. To ensure that the mod loaded fine in this version, restart the game or save the config using the MCM.

Awesome thanks !

After the last update some stack sizes reverted to vanilla?
Also engineering Kit seems to be in no category as it reverted to 3/3

Yeah, just tried the update, and allmost all trash items stay vanilla (cloth, plastic, metal and stuff like that)

Dear author, maybe you misspelled some variable name? Please check when you have a time.
Your mod is essential :)

My bad, there are items that have two categories and I had some "optimizations" applied that skipped some of those items.

Sorry for any inconveniences this might have caused. Uploaded a new version that fixes that.

Thank you all for point that out!

Any ETA on when metal stacks will be fixed? :)

@sir Evans
Which metal stacks do you mean?

There is a set of basic mats that do not multiply.
- Armor plate
- Lamp
- Printed Circuit Board
- Ceramic Plate
- Lens
- Plastic
- Rags
- Rubber
- Rusty metal
- Insulating Tape
- Transformer
- Engineering kit

These have vanilla stats, they did multiplied before one of recent updates :)

I have tested it in version 0.9 and the stacks are correctly applying to these specific items.

Are you in beta version? Or have any other stacking mod installed?

Otherwise, I recommend you reinstall the mod to forcefully update it. And just to be double sure, delete the config. You can find it here:

C:\Users\{username}\AppData\LocalLow\Magnum Scriptum Ltd\Quasimorph_ModConfigs\ConfigurableStackSizes

Please let me know if the issue is solved with this. Otherwise we'll keep looking :D

It worked!
May wanna add that to mod description as a potential solution :)

Btw, out of sheer curiosity - any chance for stackable chips? :D