[1.20] Not working with Curios API Added slots/not default slot

[ErikolGamer14]

What happened?
Infinity backapck is not functioning as expected when ussing it on an Curios added back slot

• I added an extra back slot by using command (/curios add back player) So I can use 2 backpacks at the same time (Sophisticated backpacks and Industrial foregoing)
• Magnet is woking but not placing the item to the backapackpack even if filtered to do, pickup isn't working neither but refill is working properly.
• Backpack hotkey isn't working when on added back slot.

How do I trigger this bug?

• Created a clean instalation, added mods (Industrial foregoing,Titanium core and curious API)
• Execute "/curios add back player" command
• Put the ifinite backpack on the new slot
• Test infinite backpack functionalities

Industrial Foregoing Version: industrial-foregoing-1.20.1-3.5.16

Titanium Version: titanium-1.20.1-3.8.27

**Curios API Version: curios 5.9.0 **

**Crashlog If Applicable (Upload to pastebin/gist): N/A

Bug reported to Curios API as well.

[Jack-McKalling]

Also affects
industrial-foregoing: 1.20.1-3.5.19
titanium: 1.20.1-3.8.32
curios: forge-5.10.0+1.20.1

Interestingly, since Sophisticated backpacks doesn't have this issue, if you put that backpack in the added back slot and the IF one in the default slot, both work just fine.