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 0dd52686..b277ff4d 100644
--- a/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
+++ b/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
@@ -538,6 +538,8 @@ SplitPaneDivider.oneTouchArrowColor=$ComboBox.buttonArrowColor
 TabbedPane.tabHeight=32
 TabbedPane.tabSelectionHeight=3
 TabbedPane.contentSeparatorHeight=1
+TabbedPane.showTabSeparators=false
+TabbedPane.tabSeparatorsFullHeight=false
 TabbedPane.hasFullBorder=false
 TabbedPane.tabInsets=4,12,4,12
 TabbedPane.tabAreaInsets=0,0,0,0
diff --git a/flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt b/flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt
index 5e3582df..202e8dce 100644
--- a/flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt
+++ b/flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt
@@ -924,11 +924,13 @@ TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #3c3f41    javax.swing.plaf.ColorUIResource [UI]
+TabbedPane.showTabSeparators   false
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
 TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabsOpaque          true
 TabbedPane.tabsOverlapBorder   true
 TabbedPane.textIconGap         4
diff --git a/flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt b/flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt
index cbe98e76..95ebfc76 100644
--- a/flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt
+++ b/flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt
@@ -929,11 +929,13 @@ TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #f2f2f2    javax.swing.plaf.ColorUIResource [UI]
+TabbedPane.showTabSeparators   false
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
 TabbedPane.tabSelectionHeight  3
+TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabsOpaque          true
 TabbedPane.tabsOverlapBorder   true
 TabbedPane.textIconGap         4
diff --git a/flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt b/flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt
index 5df27cff..a78fb8f0 100644
--- a/flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt
+++ b/flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt
@@ -919,12 +919,14 @@ TabbedPane.selectedLabelShift  -1
 TabbedPane.selectedTabPadInsets 0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.selectionFollowsFocus true
 TabbedPane.shadow              #ccffcc    javax.swing.plaf.ColorUIResource [UI]
+TabbedPane.showTabSeparators   false
 TabbedPane.tabAreaInsets       0,0,0,0    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabHeight           32
 TabbedPane.tabInsets           4,12,4,12    javax.swing.plaf.InsetsUIResource [UI]
 TabbedPane.tabRunOverlay       0
 TabbedPane.tabSelectionHeight  3
 TabbedPane.tabSeparatorColor   #0000ff    javax.swing.plaf.ColorUIResource [UI]
+TabbedPane.tabSeparatorsFullHeight false
 TabbedPane.tabsOpaque          true
 TabbedPane.tabsOverlapBorder   true
 TabbedPane.textIconGap         4
diff --git a/flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt b/flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt
index ebc18cc3..431096d4 100644
--- a/flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt
+++ b/flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt
@@ -654,11 +654,13 @@ TabbedPane.selectedLabelShift
 TabbedPane.selectedTabPadInsets
 TabbedPane.selectionFollowsFocus
 TabbedPane.shadow
+TabbedPane.showTabSeparators
 TabbedPane.tabAreaInsets
 TabbedPane.tabHeight
 TabbedPane.tabInsets
 TabbedPane.tabRunOverlay
 TabbedPane.tabSelectionHeight
+TabbedPane.tabSeparatorsFullHeight
 TabbedPane.tabsOpaque
 TabbedPane.tabsOverlapBorder
 TabbedPane.textIconGap