diff --git a/scss/abstracts/_mixins.scss b/scss/abstracts/_mixins.scss
index e832e336c5..56dc194758 100644
--- a/scss/abstracts/_mixins.scss
+++ b/scss/abstracts/_mixins.scss
@@ -350,7 +350,7 @@
 	// richlistbox elements are crazy and will expand beyond the window size
 	// unless all/most elements in the hierarchy that contain that
 	// richlistbox have a min-height: 0 set
-	vbox, hbox {
+	vbox, hbox, groupbox {
 		min-height: 0;
 	}
 }
diff --git a/scss/components/_locateManager.scss b/scss/components/_locateManager.scss
index cd28ff0e3c..f418117e77 100644
--- a/scss/components/_locateManager.scss
+++ b/scss/components/_locateManager.scss
@@ -1,5 +1,6 @@
 #zotero-locate-manager-prefs {
 	@include macOS-normalize-controls;
+	@include contain-richlistbox;
 	
 	#button-bar, #button-bar > hbox {
 		display: flex;