Alignment of column headers not working

[c-kob]

When adding a column and setting the textalign property, this is effectively ignored because table headers are wrapped in a div (without any CSS reference) that sets "display: flex;", so all headers are pushed to the left.

Not sure where that comes from nor what purpose it is meant to serve, but a workaround is to add some custom css that overwrites, e.g.

th > div {
display: block !important;
}