diff --git a/apps/web/src/components/ChatMarkdown.tsx b/apps/web/src/components/ChatMarkdown.tsx
index 3b398dd5100e..90fca5356804 100644
--- a/apps/web/src/components/ChatMarkdown.tsx
+++ b/apps/web/src/components/ChatMarkdown.tsx
@@ -772,7 +772,7 @@ function MarkdownTable({ children, ...props }: React.ComponentProps<"table">) {
       className="chat-markdown-table-container"
       data-expanded={expanded ? "true" : "false"}
     >
-      <ScrollArea chainVerticalScroll scrollFade className="w-full max-w-full rounded-none">
+      <ScrollArea radius="none" chainVerticalScroll scrollFade className="w-full max-w-full">
         <table ref={tableRef} {...props}>
           {children}
         </table>
diff --git a/apps/web/src/components/RightPanelTabs.tsx b/apps/web/src/components/RightPanelTabs.tsx
index 23cea9c28835..e66909c0f9f5 100644
--- a/apps/web/src/components/RightPanelTabs.tsx
+++ b/apps/web/src/components/RightPanelTabs.tsx
@@ -1127,10 +1127,11 @@ export function RightPanelTabs(props: RightPanelTabsProps) {
         data-right-panel-tabbar
       >
         <ScrollArea
+          radius="none"
           ref={tabListRef}
           hideScrollbars
           scrollFade
-          className="min-w-0 flex-1 rounded-none"
+          className="min-w-0 flex-1"
           data-right-panel-tab-list
         >
           <div className="flex h-full w-max min-w-full items-center gap-1">
diff --git a/apps/web/src/components/chat/ComposerBanner.tsx b/apps/web/src/components/chat/ComposerBanner.tsx
index cd1d4bd6be42..bdd28ce555a9 100644
--- a/apps/web/src/components/chat/ComposerBanner.tsx
+++ b/apps/web/src/components/chat/ComposerBanner.tsx
@@ -282,9 +282,10 @@ function Children({ className, render, ...props }: useRender.ComponentProps<"div
 function Scroll({ className, ...props }: ComponentProps<typeof ScrollArea>) {
   return (
     <ScrollArea
+      radius="none"
       scrollFade
       className={cn(
-        "h-auto max-h-[min(24rem,40dvh)] rounded-none [&>[data-slot=scroll-area-viewport][data-has-overflow-y]]:pe-2",
+        "h-auto max-h-[min(24rem,40dvh)] [&>[data-slot=scroll-area-viewport][data-has-overflow-y]]:pe-2",
         className,
       )}
       {...props}
diff --git a/apps/web/src/components/files/FilePreviewPanel.tsx b/apps/web/src/components/files/FilePreviewPanel.tsx
index 9e9464ca4516..d51141d7896f 100644
--- a/apps/web/src/components/files/FilePreviewPanel.tsx
+++ b/apps/web/src/components/files/FilePreviewPanel.tsx
@@ -1090,10 +1090,11 @@ export default function FilePreviewPanel({
       {relativePath && attachment === undefined ? (
         <div className={FILE_SURFACE_SUBHEADER_CLASS} data-surface-subheader>
           <ScrollArea
+            radius="none"
             ref={breadcrumbRef}
             hideScrollbars
             scrollFade
-            className="min-w-0 flex-1 rounded-none"
+            className="min-w-0 flex-1"
             data-file-breadcrumbs
           >
             <div className="flex h-full w-max min-w-full items-center text-xs">
diff --git a/apps/web/src/components/onboarding/WelcomeWizard.tsx b/apps/web/src/components/onboarding/WelcomeWizard.tsx
index 7e8dea7f2dea..99e0e8513e84 100644
--- a/apps/web/src/components/onboarding/WelcomeWizard.tsx
+++ b/apps/web/src/components/onboarding/WelcomeWizard.tsx
@@ -636,10 +636,7 @@ function AgentsStep({
   const { environments } = useEnvironments();
   return (
     <StepShell title="Your agents" description="Agents available on your selected computers.">
-      <ScrollArea
-        scrollFade
-        className="mt-5 h-auto max-h-96 [&_[data-slot=scroll-area-scrollbar]]:opacity-100"
-      >
+      <ScrollArea scrollFade className="mt-5 h-auto max-h-96">
         <div className="space-y-5 pr-3">
           {environmentIds.map((environmentId) => (
             <ConnectedAgentsStep
@@ -1206,10 +1203,7 @@ function ImportStep({
           </div>
         </div>
       ) : null}
-      <ScrollArea
-        scrollFade
-        className="mt-2 h-auto max-h-80 [&_[data-slot=scroll-area-scrollbar]]:opacity-100"
-      >
+      <ScrollArea scrollFade className="mt-2 h-auto max-h-80">
         <div className="space-y-5 pr-3">
           {scans.map((scan) => {
             const scanCandidates = candidates.filter(
diff --git a/apps/web/src/components/settings/DiagnosticsSettings.tsx b/apps/web/src/components/settings/DiagnosticsSettings.tsx
index 0a987eca8c1d..0fe1ae2f624e 100644
--- a/apps/web/src/components/settings/DiagnosticsSettings.tsx
+++ b/apps/web/src/components/settings/DiagnosticsSettings.tsx
@@ -172,10 +172,11 @@ function DiagnosticsTable({
 }) {
   return (
     <ScrollArea
+      radius="none"
       chainVerticalScroll
       scrollFade
       hideScrollbars
-      className="w-full max-w-full rounded-none"
+      className="w-full max-w-full"
     >
       <table
         className={cn("w-full text-left text-xs", minTableWidth, columnWidths && "table-fixed")}
@@ -355,10 +356,11 @@ function ProcessDiagnosticsTable({
 
   return (
     <ScrollArea
+      radius="none"
       chainVerticalScroll
       scrollFade
       hideScrollbars
-      className="max-h-[min(64vh,44rem)] w-full max-w-full rounded-none border-t border-border/60"
+      className="max-h-[min(64vh,44rem)] w-full max-w-full border-t border-border/60"
     >
       <table className="w-full min-w-[1040px] table-fixed text-left text-xs">
         <colgroup>
@@ -1224,10 +1226,11 @@ export function DiagnosticsSettingsPanel() {
       <SettingsSection title="Span Logs">
         {data && data.latestWarningAndErrorLogs.length > 0 ? (
           <ScrollArea
+            radius="none"
             chainVerticalScroll
             scrollFade
             hideScrollbars
-            className="w-full max-w-full rounded-none"
+            className="w-full max-w-full"
           >
             <table className="w-full min-w-[920px] table-fixed text-left text-xs">
               <colgroup>
diff --git a/apps/web/src/components/settings/ProviderSettingsPanel.tsx b/apps/web/src/components/settings/ProviderSettingsPanel.tsx
index 7f09e89c53df..509a758f3ccb 100644
--- a/apps/web/src/components/settings/ProviderSettingsPanel.tsx
+++ b/apps/web/src/components/settings/ProviderSettingsPanel.tsx
@@ -334,7 +334,7 @@ function ProviderSettingsPanelContent(target: ProviderSettingsTarget) {
     options.length === 1 && options[0]?.entry.target._tag === "PrimaryConnectionTarget";
   const deviceTabs =
     !target.scoped && !onlyPrimaryDevice && options.length > 0 ? (
-      <ScrollArea hideScrollbars scrollFade className="h-11 min-w-0 flex-1 rounded-none">
+      <ScrollArea radius="none" hideScrollbars scrollFade className="h-11 min-w-0 flex-1">
         <ToggleGroup
           aria-label="Devices"
           variant="segmented"
diff --git a/apps/web/src/components/ui/scroll-area.tsx b/apps/web/src/components/ui/scroll-area.tsx
index 852a3ed10053..47076d99f256 100644
--- a/apps/web/src/components/ui/scroll-area.tsx
+++ b/apps/web/src/components/ui/scroll-area.tsx
@@ -29,6 +29,7 @@ function ScrollArea({
   scrollbarGutter = false,
   hideScrollbars = false,
   chainVerticalScroll = false,
+  radius = "inherit",
   ...props
 }: ScrollAreaPrimitive.Root.Props & {
   scrollFade?: boolean;
@@ -38,10 +39,16 @@ function ScrollArea({
   scrollbarGutter?: boolean;
   hideScrollbars?: boolean;
   chainVerticalScroll?: boolean;
+  /** The viewport clips to the parent's radius; "none" for a region flush to an edge. */
+  radius?: "inherit" | "none";
 }) {
   return (
     <ScrollAreaPrimitive.Root
-      className={cn("relative size-full min-h-0 overflow-hidden rounded-[inherit]", className)}
+      className={cn(
+        "relative size-full min-h-0 overflow-hidden",
+        radius === "none" ? "rounded-none" : "rounded-[inherit]",
+        className,
+      )}
       {...props}
     >
       <ScrollAreaPrimitive.Viewport
diff --git a/scripts/lint-restyle-ceiling.ts b/scripts/lint-restyle-ceiling.ts
index 00fb610635dd..53e91c630730 100644
--- a/scripts/lint-restyle-ceiling.ts
+++ b/scripts/lint-restyle-ceiling.ts
@@ -8,7 +8,7 @@ import * as NodeURL from "node:url";
 // components/ui exports are migrated to variants (see vite.config.ts). This gate keeps the
 // count from growing: CI fails when findings exceed the ceiling. Lower the ceiling when you
 // migrate a file, and delete this script when the rule becomes an error.
-export const RESTYLE_CEILING = 1070;
+export const RESTYLE_CEILING = 1060;
 
 const RULE = "shadcn(no-restyle)";