Hi Alex T⚜️ 

1) Yes, I thought so. I suppose that using JS I should detect the "on click" action in "Discussion" and then execute the JS code to disable the tags, although I don't think I can do this without modifying the UNA code.

2) I tried to change the size of the box using CSS in "raw block", but it also changes the height of another "select" element that I don't need to modify.

<style> .bx-form-input-select_multiple, .bx-form-input-radio_set, .bx-form-input-checkbox_set { height: 300px; resize: vertical; }
</style>

It may be convenient to wait for the launch of UNA 11, hopefully it won't take long.

Thanks.