diff --git a/css/80_app.css b/css/80_app.css
index afb79aa9a..25e038d98 100644
--- a/css/80_app.css
+++ b/css/80_app.css
@@ -2359,6 +2359,9 @@ button.raw-tag-option svg.icon {
 [dir='rtl'] .tag-row input.value {
     border-left: 1px solid #ccc;
 }
+.tag-row input.value.conflicting::placeholder {
+    font-style: italic;
+}
 
 .tag-row:first-child input.key {
     border-top: 1px solid #ccc;
diff --git a/modules/ui/raw_tag_editor.js b/modules/ui/raw_tag_editor.js
index abbef1108..b8aa43ea7 100644
--- a/modules/ui/raw_tag_editor.js
+++ b/modules/ui/raw_tag_editor.js
@@ -285,6 +285,9 @@ export function uiRawTagEditor(context) {
             .attr('title', function(d) {
                 return typeof d.value === 'string' ? d.value : Array.from(_keyValues[d.key]).sort().join('; ');
             })
+            .classed('conflicting', function(d) {
+                return typeof d.value !== 'string';
+            })
             .attr('placeholder', function(d) {
                 return typeof d.value === 'string' ? null : t('inspector.multiple_values');
             })