diff --git a/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties b/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
index c408f1f7..4d4a5f59 100644
--- a/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
+++ b/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
@@ -435,6 +435,9 @@ ScrollBar.buttonArrowColor=$ComboBox.buttonArrowColor
 ScrollBar.buttonDisabledArrowColor=$ComboBox.buttonDisabledArrowColor
 ScrollBar.allowsAbsolutePositioning=true
 
+[linux]ScrollBar.thumbInsets=2,2,2,2
+[linux]ScrollBar.thumbArc=999
+
 
 #---- ScrollPane ----
 
diff --git a/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202-linux.txt b/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202-linux.txt
index 129e184f..b25d8e0b 100644
--- a/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202-linux.txt
+++ b/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatDarkLaf_1.8.0_202-linux.txt
@@ -7,6 +7,12 @@
 - ProgressBar.font               [active] Segoe UI plain 10    javax.swing.plaf.FontUIResource [UI]
 + ProgressBar.font               [active] Cantarell plain 13    javax.swing.plaf.FontUIResource [UI]
 
+- ScrollBar.thumbArc             0
++ ScrollBar.thumbArc             999
+
+- ScrollBar.thumbInsets          0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
++ ScrollBar.thumbInsets          2,2,2,2    javax.swing.plaf.InsetsUIResource [UI]
+
 - defaultFont                    Segoe UI plain 12    javax.swing.plaf.FontUIResource [UI]
 + defaultFont                    Cantarell plain 15    javax.swing.plaf.FontUIResource [UI]
 
diff --git a/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202-linux.txt b/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202-linux.txt
index 129e184f..b25d8e0b 100644
--- a/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202-linux.txt
+++ b/flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/uidefaults/FlatLightLaf_1.8.0_202-linux.txt
@@ -7,6 +7,12 @@
 - ProgressBar.font               [active] Segoe UI plain 10    javax.swing.plaf.FontUIResource [UI]
 + ProgressBar.font               [active] Cantarell plain 13    javax.swing.plaf.FontUIResource [UI]
 
+- ScrollBar.thumbArc             0
++ ScrollBar.thumbArc             999
+
+- ScrollBar.thumbInsets          0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
++ ScrollBar.thumbInsets          2,2,2,2    javax.swing.plaf.InsetsUIResource [UI]
+
 - defaultFont                    Segoe UI plain 12    javax.swing.plaf.FontUIResource [UI]
 + defaultFont                    Cantarell plain 15    javax.swing.plaf.FontUIResource [UI]