Datatable (dynamic loading by proxy) sends a duplicate request

Why does a DataTable (dynamic loading) with a proxy base on async function sometimes send a double request?
If the function is synchronous, there is no problem.

The same situation occurs when we use the load function instead of a proxy:

url: function(parama){...}

Have fun
… scroll first DataTable(async fn), you will see red message (double request)
… scroll second DataTable(sync fn) - ok

https://snippet.webix.com/b33v5pbk

Hello @AndS,

Unfortunately it’s not entirely clear what’s causing this, but it’s definitely not correct behavior, thanks for reporting it.

This issue has been forwarded to our technical team and we will notify you as soon as there are any updates on it.