I can hide and show the columns, and it dynamically updates the grid

src/myfasthtml/assets/myfasthtml.js

@@ -1200,8 +1200,10 @@ function triggerHtmxAction(elementId, config, combinationStr, isInside, event) {
       }
     }
 
-    // Prevent default if we found any match and not in input context
-    if (currentMatches.length > 0 && !isInInputContext()) {
+    // Prevent default only if click was INSIDE a registered element
+    // Clicks outside should preserve native behavior (checkboxes, buttons, etc.)
+    const anyMatchInside = currentMatches.some(match => match.isInside);
+    if (currentMatches.length > 0 && anyMatchInside && !isInInputContext()) {
       event.preventDefault();
     }