Sortable not working

[gaxolio]

Hi @dhrytsenko ,
I have the same problem of @etanuvar .
Mi env is:
polymer 3. (version 3.4.1)
bwt-datatable 3.0.0.
nodejs v.12.16.3
express v.4.17.1
I have seen your example but I don't need a paper-datatable-card.
I use a simple table that I have to sort on a column.
for example, I only have two lines that I want to order.
Following the code to the function _internalSort
on line 1088: this.set("_rowKeys", this._rowKeys);
value of this._rowKeys are correctly sorted ascending or descending.
["#0", "#1"] or ["#1", "#0"]
but the table is not updated.
In the previous version the update worked.
I have attached a piece of html code as an example.
Thanks

datatable.txt

Originally posted by @gaxolio in #46 (comment)