Adding values updates contentCells, but not the rowTitles

[jakusb]

We use a Cubit to listen to updates on our listed items.
We wrapped the StickyHeadersTable in a BlocBuilder to have it draw on new events.
We notice the contentCells are updated/inserted where the related rowTitles are not.
The list is sorted on time descend, so maybe that messes things up, but table should support inserting new lines.