diff --git a/extensions/intellij/src/testIntegration/kotlin/com/github/continuedev/continueintellijextension/Autocomplete.kt b/extensions/intellij/src/testIntegration/kotlin/com/github/continuedev/continueintellijextension/Autocomplete.kt
index beca6683933..62279b6f8b8 100644
--- a/extensions/intellij/src/testIntegration/kotlin/com/github/continuedev/continueintellijextension/Autocomplete.kt
+++ b/extensions/intellij/src/testIntegration/kotlin/com/github/continuedev/continueintellijextension/Autocomplete.kt
@@ -39,6 +39,12 @@ class Autocomplete {
                     keyboard {
                         tab()
                     }
+                    // Poll for autocomplete response from core binary (async via stdin/stdout);
+                    // CI runners can be slow, so use a generous timeout with frequent polling.
+                    val deadline = System.currentTimeMillis() + 30_000L
+                    while (!text.contains("TEST_LLM_RESPONSE_0") && System.currentTimeMillis() < deadline) {
+                        Thread.sleep(500)
+                    }
                     assertTrue(text.contains("TEST_LLM_RESPONSE_0"))
                 }
             }
diff --git a/gui/src/components/StepContainer/StepContainer.tsx b/gui/src/components/StepContainer/StepContainer.tsx
index fc6981d0558..51d8a820887 100644
--- a/gui/src/components/StepContainer/StepContainer.tsx
+++ b/gui/src/components/StepContainer/StepContainer.tsx
@@ -77,7 +77,7 @@ export default function StepContainer(props: StepContainerProps) {
   return (
     <div>
       <div
-        className={`bg-background p-1 px-1.5 ${isBeforeLatestSummary ? "opacity-35" : ""}`}
+        className={`bg-background min-w-0 p-1 px-1.5 ${isBeforeLatestSummary ? "opacity-35" : ""}`}
       >
         {uiConfig?.displayRawMarkdown ? (
           <pre className="text-2xs max-w-full overflow-x-auto whitespace-pre-wrap break-words p-4">
diff --git a/gui/src/components/StyledMarkdownPreview/SyntaxHighlightedPre.tsx b/gui/src/components/StyledMarkdownPreview/SyntaxHighlightedPre.tsx
index 6e4fc3e2be5..ad0f029e0ec 100644
--- a/gui/src/components/StyledMarkdownPreview/SyntaxHighlightedPre.tsx
+++ b/gui/src/components/StyledMarkdownPreview/SyntaxHighlightedPre.tsx
@@ -23,6 +23,7 @@ const StyledPre = styled.pre<{ theme: any }>`
   margin-top: 0;
   margin-bottom: 0;
   border-radius: 0 0 ${defaultBorderRadius} ${defaultBorderRadius} !important;
+  max-width: 100%;
   max-height: 40vh;
   overflow-y: scroll !important;
 
diff --git a/gui/src/components/StyledMarkdownPreview/index.tsx b/gui/src/components/StyledMarkdownPreview/index.tsx
index 2ff217a6147..be30d60ebda 100644
--- a/gui/src/components/StyledMarkdownPreview/index.tsx
+++ b/gui/src/components/StyledMarkdownPreview/index.tsx
@@ -66,8 +66,8 @@ const StyledMarkdown = styled.div<{
     background-color: ${vscEditorBackground};
     border-radius: ${defaultBorderRadius};
 
-    max-width: calc(100vw - 24px);
-    overflow-x: scroll;
+    max-width: 100%;
+    overflow-x: auto;
     overflow-y: hidden;
 
     padding: 8px;
diff --git a/gui/src/pages/gui/Chat.tsx b/gui/src/pages/gui/Chat.tsx
index 00e04efd1f4..ffcb80aa1ef 100644
--- a/gui/src/pages/gui/Chat.tsx
+++ b/gui/src/pages/gui/Chat.tsx
@@ -386,7 +386,7 @@ export function Chat() {
 
       <StepsDiv
         ref={stepsDivRef}
-        className={`pt-[8px] ${showScrollbar ? "thin-scrollbar" : "no-scrollbar"} ${history.length > 0 ? "min-h-0 flex-1 overflow-y-scroll" : "shrink-0"}`}
+        className={`pt-[8px] ${showScrollbar ? "thin-scrollbar" : "no-scrollbar"} ${history.length > 0 ? "min-h-0 min-w-0 flex-1 overflow-y-scroll" : "shrink-0"}`}
       >
         <DeprecationBanner dismissable={true} />
         {highlights}