A scroll is automatically created in the confirm or alert window

It seems that scrolling occurs depending on the screen ratio. Are there any changes planned?

Unfortunately I was not able to reproduce your issue locally.
The following snippet seems to display correctly:

Could you please, provide a complete demo/code snippet and exact steps to reproduce the issue?

No, I got my image from snippet.
I think it depends on the resolution, but my PC information is MacBook Pro 14/resolution is 1512*982 (default).

Please, try to add the following css:

<style>
    .dhx_alert__content{
        overflow-y: hidden;
    }
</style>