State changes add unexpected data to object

[anderslutzhoft]

Reproduction

I have a github repo I can provide on request

Steps to reproduce the bug

I define a store with the following state:

offerColumns: [
        { key: "name", label: "Client", calc: "count", type: "text"},
        { key: "fullpayment", label: "Full", calc: "sum", type: "number"},
        { key: "0", label: "jan", date: "2022-01-01", calc: "sum", type: "installment"},
        { key: "1", label: "feb", date: "2022-02-01", calc: "sum", type: "installment"},
        { key: "2", label: "mar", date: "2022-03-01", calc: "sum", type: "installment"},
        { key: "3", label: "apr", date: "2022-04-01", calc: "sum", type: "installment"},
        { key: "4", label: "may", date: "2022-05-01", calc: "sum", type: "installment"},
        { key: "5", label: "jun", date: "2022-06-01", calc: "sum", type: "installment"},
        { key: "6", label: "jul", date: "2022-07-01", calc: "sum", type: "installment"},
        { key: "7", label: "aug", date: "2022-08-01", calc: "sum", type: "installment"},
        { key: "8", label: "sep", date: "2022-09-01", calc: "sum", type: "installment"},
        { key: "9", label: "oct", date: "2022-10-01", calc: "sum", type: "installment"},
        { key: "10", label: "nov", date: "2022-11-01", calc: "sum", type: "installment"},
        { key: "11", label: "dec", date: "2022-12-01", calc: "sum", type: "installment"},
        { key: "year", label: "Year", calc: "none", type: "number"},
  
      ],

however the state when read in dev and production is returned:
`

[ { "key": "name", "label": "Client", "calc": "count", "type": "installment" }, 
{ "key": "fullpayment", "label": "Full", "calc": "sum", "type": "installment" }, 
{ "key": "0", "label": "jan", "date": "2022-01-01", "calc": "sum", "type": "installment" }, 
{ "key": "1", "label": "feb", "date": "2022-02-01", "calc": "sum", "type": "installment" }, 
{ "key": "2", "label": "mar", "date": "2022-03-01", "calc": "sum", "type": "installment" },
 { "key": "3", "label": "apr", "date": "2022-04-01", "calc": "sum", "type": "installment" }, 
{ "key": "4", "label": "may", "date": "2022-05-01", "calc": "sum", "type": "installment" }, 
{ "key": "5", "label": "jun", "date": "2022-06-01", "calc": "sum", "type": "installment" },
 { "key": "6", "label": "jul", "date": "2022-07-01", "calc": "sum", "type": "installment" },
 { "key": "7", "label": "aug", "date": "2022-08-01", "calc": "sum", "type": "installment" },
 { "key": "8", "label": "sep", "date": "2022-09-01", "calc": "sum", "type": "installment" },
 { "key": "9", "label": "oct", "date": "2022-10-01", "calc": "sum", "type": "installment" }, 
{ "key": "10", "label": "nov", "date": "2022-11-01", "calc": "sum", "type": "installment" }, 
{ "key": "11", "label": "dec", "date": "2022-12-01", "calc": "sum", "type": "installment" },
 { "key": "year", "label": "Year", "calc": "none", "type": "installment" } ]`

Somehow the type key is set to installment on all objects.
Even if I try to update the state during runtime, nothing changes.

If I define the state as offerColumns = [] this will be reflected at runtime with an empty object, but as soon as I try to update the state with any data in runtime, like offerColumns = {"foo": "fa"}, it returns [ { "foo": "fa", "type": "installment" } ]

I'm losing my mind here...

Expected behavior

I expect the state to reflect what I set it to.

Actual behavior

On some states I get unexpected additions to my objects.

Additional information

No response