Properties Panel: TextArea with variable height

In version 0.6.x of the properties panel, there was textBox, which would auto-expand to fit the content. I presume the equivalent in version 1 is TextArea, but it does not adapt to the content but has a fixed two lines. How can I configure TextArea so that it auto-expands?

This feature is currently not available in bpmn-js-properties-panel@v1. There is an open issue though: Implement proper textbox component · Issue #25 · bpmn-io/properties-panel · GitHub