Comma character "," disappears in dash table

I do have dataframes that can contain a list in a cell, e.g. [2016,2017].

However, the content per cell is rendered as “20162017”. Is there a way to give the join-string-character? So I could achieve “2016, 2017”?

When hovering the mouse over such data entries, the comma is actually still shown and filtering the column also requires specifying the comma for intended results.

38361651-6b843e90-38ce-11e8-8274-85a2efdd6b0f