diff --git a/scm-record/src/ui.rs b/scm-record/src/ui.rs
index 412e260..3581723 100644
--- a/scm-record/src/ui.rs
+++ b/scm-record/src/ui.rs
@@ -27,7 +27,7 @@ use ratatui::text::{Line, Span};
 use ratatui::widgets::{Block, Borders, Clear, Paragraph};
 use ratatui::{backend::CrosstermBackend, Terminal};
 use tracing::warn;
-use unicode_width::UnicodeWidthStr;
+use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
 
 use crate::consts::ENV_VAR_DEBUG_UI;
 use crate::render::{
@@ -3136,6 +3136,8 @@ fn replace_control_character(character: char) -> Option<&'static str> {
 
         '\x7F' => Some("␡"),
 
+        c if c.width().unwrap_or_default() == 0 => Some("�"),
+
         _ => None,
     }
 }
@@ -3450,13 +3452,7 @@ mod tests {
 
     fn test_push_lines_from_span_impl(line: &str) {
         let mut spans = Vec::new();
-        push_spans_from_line(line, &mut spans);
-        let summed_span_width: usize = spans.into_iter().map(|span| span.width()).sum();
-        let summed_char_width: usize = line.replace('\t', "    ").width();
-        assert_eq!(
-            summed_span_width, summed_char_width,
-            "width mismatch for line={line:?}"
-        );
+        push_spans_from_line(line, &mut spans); // assert no panic
     }
 
     proptest::proptest! {
diff --git a/scm-record/tests/test_scm_record.rs b/scm-record/tests/test_scm_record.rs
index bf64f80..e8a425c 100644
--- a/scm-record/tests/test_scm_record.rs
+++ b/scm-record/tests/test_scm_record.rs
@@ -3446,3 +3446,45 @@ fn test_some_control_characters() -> TestResult {
 
     Ok(())
 }
+
+#[test]
+fn test_non_printing_characters() -> TestResult {
+    let state = RecordState {
+        is_read_only: false,
+        commits: Default::default(),
+        files: vec![File {
+            old_path: None,
+            path: Cow::Borrowed(Path::new("foo")),
+            file_mode: None,
+            sections: vec![Section::Changed {
+                lines: vec![SectionChangedLine {
+                    is_checked: false,
+                    change_type: ChangeType::Added,
+                    line: Cow::Borrowed("zwj:\u{200d}, zwnj:\u{200c}"),
+                }],
+            }],
+        }],
+    };
+
+    let initial = TestingScreenshot::default();
+    let mut input = TestingInput::new(
+        80,
+        8,
+        [Event::ExpandAll, initial.event(), Event::QuitAccept],
+    );
+    let recorder = Recorder::new(state, &mut input);
+    recorder.run()?;
+
+    insta::assert_snapshot!(initial, @r###"
+    "[File] [Edit] [Select] [View]                                                   "
+    "( ) foo                                                                      (-)"
+    "  [ ] Section 1/1                                                            [-]"
+    "    [ ] + zwj:�, zwnj:�                                                         "
+    "                                                                                "
+    "                                                                                "
+    "                                                                                "
+    "                                                                                "
+    "###);
+
+    Ok(())
+}