diff --git a/packages/frontend-core/src/components/grid/cells/DataCell.svelte b/packages/frontend-core/src/components/grid/cells/DataCell.svelte
index 4f181ab12e..395f2da6e1 100644
--- a/packages/frontend-core/src/components/grid/cells/DataCell.svelte
+++ b/packages/frontend-core/src/components/grid/cells/DataCell.svelte
@@ -47,6 +47,7 @@
 
   // Determine if the cell is editable
   $: readonly =
+    hasCustomFormat ||
     columns.actions.isReadonly(column) ||
     (!$config.canEditRows && !row._isNewRow)