it is the fill: both option that woes with dropdown visibility - set it to none

boot.php

@@ -70,7 +70,7 @@ require_once('include/security.php');
 
 
 define('PLATFORM_NAME', 'hubzilla');
-define('STD_VERSION', '10.3.44');
+define('STD_VERSION', '10.3.45');
 define('ZOT_REVISION', '6.0');
 
 define('DB_UPDATE_VERSION', 1263);

view/css/conversation.css

@@ -96,13 +96,6 @@
 
 /* conv_item */
 
-.thread-wrapper {
-	/* fix issue where dropdown menus of dynamically loaded content
-	 * are hidden behind its following thread-wrapper for whatever reason
-	 */
-	z-index: inherit;
-}
-
 .wall-item-wrapper {
 	margin-left: .75rem;
 }

view/js/main.js

@@ -1437,13 +1437,13 @@ function injectWithAnimation(containerId, parsedDoc, overwrite = false) {
 		const el = newElements[i].cloneNode(true);
 		container.insertBefore(el, container.firstChild);
 
-		el.animate([
+		const animation = el.animate([
 			{ opacity: 0, transform: 'scale(.7) translateY(-20px)' },
 			{ opacity: 1, transform: 'scale(1) translateY(0)' }
 		], {
 			duration: 300,
 			delay: (newElements.length - 1 - i) * 50,
-			fill: 'both',
+			fill: 'none',
 			easing: 'ease-out'
 		});
 	}