Changed expression language indicator not shown

[Egoplayer]

Describe the Bug

The DMN Editor doesn't show the set expression language for some dmn cells. If the expression language is changed from the default FEEL to any other expression language a blue indicator appears on the right side of the cell to show there is a changed expression language active. This does only work for every second cell.

Hover over the cells shows the extended indicated (shows the set expression language) anyway even if the blue indicator is not shown
Steps to Reproduce

1. Create a new DMN via the online modeler https://demo.bpmn.io/dmn
2. Add 2-3 rules (rows)
3. change the expression language for every input cell to another expression language (e.g. Javascript)

The Issue should occur in lines 2, 4, 6, ...

Expected Behavior

I expect to show this blue indicator in every cell if the expression language is changed

Environment

• Browser: Chrome 90
• OS: Windows 10
• Library version: 10.0.0 + latest

[people-ware]

I think this is caused by

.dmn-decision-table-container .cell .dms-badge.dmn-expression-language {
  z-index: -1;
}

in https://github.com/bpmn-io/dmn-js/blob/develop/packages/dmn-js-decision-table/assets/css/dmn-js-decision-table.css#L536

[pinussilvestrus]

Thanks for reporting! This relates to camunda/camunda-modeler#1678

Feel free to open a PR that improves the situation!