HOTFIXES: я забыл

src/styles/button-styles/segmented-button.sass

@@ -10,29 +10,14 @@ div.m3.m3-segmented-buttons
         border-radius: 0
         box-sizing: border-box
         height: 40px
+        min-width: 108px
+        border: 1px solid var(--md-sys-color-outline)
 
-        &
-            border: 1px solid var(--md-sys-color-outline)
-            border-right: 0.5px
-            border-left: 0.5px
-            border-left-style: solid
-            border-right-style: solid
-            border-left-color: var(--md-sys-color-outline)
-            border-right-color: var(--md-sys-color-outline)
-            min-width: 107px
+        &:not(:first-child)
+            margin-left: -1px
 
         &:first-child
-            border: 1px solid var(--md-sys-color-outline)
-            border-right: 0.5px
-            border-right-style: solid
-            border-right-color: var(--md-sys-color-outline)
-            min-width: 108px - 0.5px
             border-radius: 20px 0 0 20px
 
         &:last-child
-            border: 1px solid var(--md-sys-color-outline)
-            border-left: 0.5px
-            border-left-style: solid
-            border-left-color: var(--md-sys-color-outline)
-            min-width: 108px - 0.5px
-            border-radius: 0 20px 20px 0
+            border-radius: 0 20px 20px 0