diff --git a/crates/ui-egui/src/widgets.rs b/crates/ui-egui/src/widgets.rs
index c74a78a0f..4c5891c1a 100644
--- a/crates/ui-egui/src/widgets.rs
+++ b/crates/ui-egui/src/widgets.rs
@@ -486,6 +486,20 @@ mod field_number_tests {
         assert_eq!(field_number("45*2°", "°", false), Some(90.0));
         assert_eq!(field_number("50% / 2", "%", false), Some(25.0));
     }
+
+    /// A thousands comma is refused inside Kerning's pair of parentheses and before `%` or the
+    /// suffix, as it is in plain text, rather than read as a decimal comma (`(1,000)` as 1).
+    #[test]
+    fn a_thousands_comma_is_refused_inside_parentheses_and_before_a_suffix() {
+        for text in ["(1,000)", " (-1,000) ", "(12,500)"] {
+            assert_eq!(field_number(text, "", true), None, "{text}");
+        }
+        assert_eq!(field_number("1,000%", "%", false), None);
+        assert_eq!(field_number("1,000°", "°", false), None);
+        assert_eq!(field_number("(1,5)", "", true), Some(1.5));
+        assert_eq!(field_number("(0,125)", "", true), Some(0.125));
+        assert_eq!(field_number("12,5%", "%", false), Some(12.5));
+    }
 }
 
 #[cfg(test)]
diff --git a/crates/ui-egui/src/widgets/look_tests.rs b/crates/ui-egui/src/widgets/look_tests.rs
index 1f9275008..582833127 100644
--- a/crates/ui-egui/src/widgets/look_tests.rs
+++ b/crates/ui-egui/src/widgets/look_tests.rs
@@ -494,5 +494,7 @@ fn kerning_reads_parentheses_around_its_text_with_a_manual_value_too() {
     for automatic in [false, true] {
         assert_eq!(typed(automatic, "(10+5)"), Some(SpinPick::Value(15.0)), "automatic: {automatic}");
         assert_eq!(typed(automatic, "(10+5)*2"), None, "automatic: {automatic}");
+        assert_eq!(typed(automatic, "(1,000)"), None, "a thousands comma, automatic: {automatic}");
+        assert_eq!(typed(automatic, "(1,5)"), Some(SpinPick::Value(1.5)), "a decimal comma, automatic: {automatic}");
     }
 }
diff --git a/crates/ui-egui/src/widgets/numeric.rs b/crates/ui-egui/src/widgets/numeric.rs
index 847b3b0ea..a1a0433ae 100644
--- a/crates/ui-egui/src/widgets/numeric.rs
+++ b/crates/ui-egui/src/widgets/numeric.rs
@@ -511,15 +511,15 @@ fn bounded_field_reading(
 /// may follow any operand: `45*2°`, `50% / 2`. With `parentheses` (Kerning, which shows its
 /// automatic value as `(12)`), one pair of parentheses around the whole text is dropped first, so
 /// `(12)` reads as 12. Any other parentheses are refused: `(10+5)*2` reads as nothing, not as
-/// `10+5*2`.
+/// `10+5*2`. A decimal comma is read ([`decimal_point`]) after the suffix, `%`, `°` and that pair
+/// are dropped, so `(1,000)` and `1,000%` are refused as thousands rather than read as 1.
 pub(super) fn field_number(buf: &str, suffix: &str, parentheses: bool) -> Option<f64> {
     let suffix = suffix.trim();
-    let buf = decimal_point(buf);
     let bare = if suffix.is_empty() { buf.to_string() } else { buf.replace(suffix, "") };
     let bare = bare.replace(['%', '°'], "");
     let bare = bare.trim();
     let bare = if parentheses { bare.strip_prefix('(').and_then(|b| b.strip_suffix(')')).unwrap_or(bare) } else { bare };
-    vectorcraft_doc::parse_number(bare)
+    vectorcraft_doc::parse_number(&decimal_point(bare))
 }
 
 /// The text [`plain_field`] shows for `value`: at most `decimals` places, without trailing zeros,