Validation Error for Select Component and Data Source Type URL

[Leeloo5E]

Describe the bug

When using the Select component with the DataSource "URL" selected, a validation error occurs in the browser console.

If you use several of these select components with "URL", the browser becomes increasingly slower and even stops. The form is also hardly usable anymore.

Version/Branch

├── @formio/js@5.0.0-rc.39 ├── @formio/core@2.0.0-rc.10

Steps To Reproduce

1. Install Formio JS and create form builder
2. Create a select component
3. Go to data section and select "URL" as Data Source Type
4. Set a Data Source URL
5. Save the form
6. Open form in Viewer

Expected behavior
No error. Form works well.

Actual behavior

Validator error: Failed to validate available values in select component 'organizationalUnitName': data source url is not valid}

Additional context
Seems the error is cause from
https://github.com/formio/core/blob/v2.0.0-rc.10/src/process/validation/rules/validateAvailableItems.ts#L141

[lane-formio]

My initial suggestion is to update core to the latest rc to see if that has resolved.
Otherwise, I'd suggest using the latest stable release versions.

[radovan-jupa]

I tried @formio/js 5.0.0-rc.47 with @formio/core 2.1.0-dev.tt.3 (both latest versions) and I have same issue.

[radovan-jupa]

I think that problem could be function isValidateableSelectComponent. The function does not check value of validation settings onlyAvailableItems but only existence of this property. Even though the component has disabled validation of onlyAvailableItems (validate.onlyAvailableItems = false), it still performs validation on the available values.

https://github.com/formio/core/blob/master/src/process/validation/rules/validateAvailableItems.ts#L17

function isValidateableSelectComponent(component: any): component is SelectComponent {
    return (
        component &&
        !!component.validate?.hasOwnProperty('onlyAvailableItems') &&     // probably should be !!component.validate?.onlyAvailableItems
        component.type === 'select' &&
        component.dataSrc !== 'resource'
    );
}

[lane-formio]

Have you attempted this with formiojs@4.19.1 and core@2.0.0?