[MVC] When inserting a decimal in the Razor view, I got the number without decimal in the viewmodel

[advapiIT]

I got an application I migrated from 5.3.4 -> 6 and I realized that when I type 20.1 in the input field, I got 201 in the ViewModel.
I created a new project from scratch and it works... I really don't understand what can be gone wrong

 public class CreateMetalloViewModel
        {
            [Required]
            [StringLength(128)]
            public string Metallo { get; set; }

            [Required]
            [Display(Name ="Euro)]
            public float Euro{ get; set; }
        }

here I got 201 for Item.Euro

    public async Task<IActionResult> OnPostAsync()
        {
            var dto = ObjectMapper.Map<CreateMetalloViewModel, CreateOrUpdateAnagraficaMetalloDto>(Item);
            await _anagraficaMetalloAppService.CreateAsync(dto);
            return NoContent();
        }

And the form is really simple

<abp-dynamic-form abp-model="Item" asp-page="/Anagrafiche/Metalli/CreateModal">
    <abp-modal>
        <abp-modal-header title="Aggiungi nuovo metallo"></abp-modal-header>
        <abp-modal-body>
            <abp-form-content />
        </abp-modal-body>
        <abp-modal-footer buttons="@(AbpModalButtons.Cancel|AbpModalButtons.Save)"></abp-modal-footer>
    </abp-modal>
</abp-dynamic-form>

Any suggestion?

[ismcagdas]

I created a new project from scratch and it works...

Is this a raw ASP.NET Core project or an ABP based project ? By the way, probably this is not related to LeptonX theme.