Raised here : https://mail.openjdk.java.net/pipermail/swing-dev/2021-January/011513.html

git diff StrikeMetrics.java
diff --git a/src/java.desktop/share/classes/sun/font/StrikeMetrics.java b/src/java.desktop/share/classes/sun/font/StrikeMetrics.java
index ca561fb99e8..f6c791572d3 100644
--- a/src/java.desktop/share/classes/sun/font/StrikeMetrics.java
+++ b/src/java.desktop/share/classes/sun/font/StrikeMetrics.java
@@ -88,7 +88,7 @@ public final class StrikeMetrics {
     StrikeMetrics() {
         ascentX = ascentY = Integer.MAX_VALUE;
         descentX = descentY = leadingX = leadingY = Integer.MIN_VALUE;
- baselineX = baselineX = maxAdvanceX = maxAdvanceY = Integer.MIN_VALUE;
+ baselineX = baselineY = maxAdvanceX = maxAdvanceY = Integer.MIN_VALUE;
     }
 
     StrikeMetrics(float ax, float ay, float dx, float dy, float bx, float by,