Mobs from Spawners not Stacking

[Spindelle]

Minecraft's Version

1.21.1

Plugin's Version

Wildstacker 2024.3

Describe the bug

I've never done this before so forgive any errors.

Basically any spawner I use, no matter how I obtain them, all mobs spawned from a spawner will not stack. They spawn separately and never combine even if I push them together. The only way a mob stacks is if I spawn them in using eggs in creative mode, but that isn't what I want. I was on a server where mobs spawned from spawners purchased via EconomyShop stacked perfectly and without constraints such as lighting or space confinement. If there was a block open, a mob would spawn and it'd spawn multiple of that mob in that 1 spot.

I had it working for about 5 minutes when I installed the plugin, and then it just stopped working ever since no matter what I did to the config. I have also tried uninstalling and reinstalling the plugin. Still no luck. Here is my config file, I've only changed a few things to prevent mobs like sniffers, wolves and cats from stacking. Other than that, nothing else I do seems to work.

WildStacker Configuration.docx

I run these plugins on the server;
https://gyazo.com/7fee8324bf374ffa508d8d13877bc7c3

Am I a dummy or is this a plugin error? Again, forgive me, its been years since I've ran a server, I'm not as good at finding solutions as I used to be.

To Reproduce

I have no idea what happened to reproduce this issue.

Install, boot up server, issues.

Additional Information

No response

[OmerBenGera]

Run /ws simulate and click two entities - it will tell you why they can't stack together.
Also, update to latest dev build, check if it still occurs.
Regarding your config, upload it to pastebin and send a link to it here.