Sadly the newest updates didn't change anything regarding items that I cannot set the stack for.
All keycards e.g., snowball, wall frames & gates, fence frames & gates.
stacksizecontroller.setstack <item shortname or id> <stack limit or multiplier> doesn't work with these items. But that is a very old issue now.
Could you try to fix this soon?

Btw. with the new update stacksizecontroller.setstack <item shortname or id> stack limit won't work anymore, only the multiplier does.

"keycard_blue": 100,
"keycard_green": 100,
"keycard_red": 100,
"snowball": 10,
"gates.external.high.stone": 10,
"gates.external.high.wood": 10,
"wall.external.high": 100,
"wall.external.high.ice": 100,
"wall.external.high.stone": 100,
"wall.frame.cell": 10,
"wall.frame.cell.gate": 10,
"wall.frame.fence": 10,
"wall.frame.fence.gate": 10,
"wall.frame.garagedoor": 10,
"wall.frame.netting": 50,
"wall.frame.shopfront": 10,
"wall.frame.shopfront.metal": 10,
"wall.graveyard.fence": 10,
"wall.ice.wall": 10,
"wall.window.bars.metal": 10,
"wall.window.bars.toptier": 10,
"wall.window.bars.wood": 10,

Yeah. I read a long time ago that you didn't have these problems.
But I still have them with the exact same items.

Kleementin

Yeah. I read a long time ago that you didn't have these problems.
But I still have them with the exact same items.

stacksizecontroller.setstack is working correctly for "gates.external.high.stone" on v4.0 for me. Shows the custom stack and updates in the configuration correctly. I do see it somehow grabbing the incorrect default vanilla stack size, I'll look into that. And confirmed, I set the custom stack to 10 and spawned in 15 which stacked correctly. 

Have you confirmed it doesn't stack on spawned items? Have you confirmed AllowStackingItemsWithDurability is set to true in the configuration?

High external stone gates are not the problem for me. I just use the Category Ctack Multiplier here.
But the stacks of the items I mentioned can not be changed via command or by setting them in the config.
The config shows the amount I set but they don't stack like that in the game.
Doesn't stack on spawned items? No matter if I spawn or craft them, the stack size is the same.
Why should I set AllowStackingItemsWithDurability is set to true?
I don't want damaged objects to be stackable.

Kleementin

High external stone gates are not the problem for me. I just use the Category Ctack Multiplier here.
But the stacks of the items I mentioned can not be changed via command or by setting them in the config.
The config shows the amount I set but they don't stack like that in the game.
Doesn't stack on spawned items? No matter if I spawn or craft them, the stack size is the same.
Why should I set AllowStackingItemsWithDurability is set to true?
I don't want damaged objects to be stackable.

First issue is resolved in the release I just pushed. I'd initially held it back as I didn't have time to address some of the issues users were having, but their issues ultimately were specific to their environment.

Well you see, all the items you're having issues with have, you guessed it, durability. So the issue here is that the plugin is working as configured. You don't want damaged objects to be stackable, and that setting prevents that, but as the name states, it prevents all items with durability from stacking. Which means if it has durability, the plugin leaves it at the default stack size. 

You stated you have issues with these items not stacking (All keycards e.g., snowball, wall frames & gates, fence frames & gates.) well they all have durability, and keycards could be given infinite durability if they did stack. I could probably add an exception for things in the construction category as I don't believe you can pickup wall frames, gates, fences etc after placing them so you couldn't exploit durability unless there is a plugin allowing that to happen. 

Bottom line, the plugin is functioning correctly as you have it configured. If you'd like to change some of that functionality, let me know.

Kleementin

High external stone gates are not the problem for me. I just use the Category Ctack Multiplier here.
But the stacks of the items I mentioned can not be changed via command or by setting them in the config.
The config shows the amount I set but they don't stack like that in the game.
Doesn't stack on spawned items? No matter if I spawn or craft them, the stack size is the same.
Why should I set AllowStackingItemsWithDurability is set to true?
I don't want damaged objects to be stackable.

Because if you are using a Loot or bot plugin that allows you to set weapon condition unless you set the min/max to 100 they will have damage and you will have to repair them before you can stack them which can be a pain especially if there is a lot of loot to collect. The only item that i could not get to stack was explosives but i found that i could stack it by using IndividualItemStackmultipliers

"IndividualItemStackMultipliers": {
"explosives": 600000.0

pookins

Because if you are using a Loot or bot plugin that allows you to set weapon condition unless you set the min/max to 100 they will have damage and you will have to repair them before you can stack them which can be a pain especially if there is a lot of loot to collect.

This has actually changed with v4.x. Those hooks were causing enough issues I just cut them out completely. Now with it set to true, any durability above 0 can be stacked. Might implement a change that allows anything over 95% durability to stack, but honestly it's such a minor issue I'm not sure it's worth it. Vanilla servers won't be stacking guns most likely, and high rate servers it doesn't really make things THAT much easier.

Ok. Now I get why it never worked out for me.
Thank you.