Column '{colId}' template uses {{{{expr}}}} (unescaped output), which requires allowUnsafeTemplates: true at grid level. The value will be escaped instead. Turning escaping off must be a deliberate, auditable choice.

Warnings reference › tpl-unsafe:*

Identifier

tpl-unsafe:*

Raised by

The grid (rendering)

Since

1.0.1

What happened

A template asked for unescaped output with the triple-brace form, and the grid was not configured to allow it. The value is escaped instead, so any markup in the data appears as text. The grid refuses the escape hatch rather than refusing to render, because taking an application down over a styling decision would be worse.

The fix

Set allowUnsafeTemplates: true at grid level if the content is genuinely trusted - it is a grid-wide, auditable decision - or return an element from a function renderer, which needs no flag.

The smallest fix

createGrid(el, { allowUnsafeTemplates: true, columns });

Reference

Covered in full at the API reference.