updates to transparency filtering, fixing mass tag edit autocomplete

app/static/js/bulk-select.js

@@ -262,7 +262,15 @@
   // Autocomplete
   // ---------------------------
   function setupAutocomplete() {
-    if (!dom.tagInput || !dom.autocomplete) return;
+    if (!dom.tagInput) return;
+
+    // Move autocomplete dropdown to body to escape transform containing block
+    // (CSS transform on parent creates new stacking context that breaks fixed positioning)
+    if (dom.autocomplete && dom.autocomplete.parentNode !== document.body) {
+      document.body.appendChild(dom.autocomplete);
+    }
+
+    if (!dom.autocomplete) return;
 
     // Show autocomplete on focus
     dom.tagInput.addEventListener('focus', () => {