Force Nintex form to open in new browser tab (Modern UI) with JSON

Hi, my client requests the task list in the New Experience.

Problem - you can't right click and open in new tab like in the classic UI.  We also have the unfortunate SharePoint issue where the task items are not opened by downloaded on click ID_.000.  I've implemented the suggested workaround which works for regular Tasklists with standard content type, but for a tasklist with nintex form, the form isn't opening.... However if I right click > open, it does open in a new tab.  Don't know why it isn't opening on click.  Anyone come across this issue?  thanks

{
"elmType": "a",
"txtContent": "@currentField",
"attributes": {
"target": "_blank",
"href": {
"operator": "+",
"operands": [
"https://site/sites/mysite/Lists/Tasks/active.aspx?ID=",
"[$ID]"
]
}
},
"style": {
"padding": "10px",
"font-weight": "bold"
}
}