diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b378a163..ebff8d858 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,7 @@ Docs: https://docs.clawd.bot
 - Dev: add prek pre-commit hooks + dependabot config for weekly updates. (#1720) Thanks @dguido.
 
 ### Fixes
+- Web UI: fix config/debug layout overflow, scrolling, and code block sizing. (#1715) Thanks @saipreetham589.
 - Web UI: show Stop button during active runs, swap back to New session when idle. (#1664) Thanks @ndbroadbent.
 - Web UI: clear stale disconnect banners on reconnect; allow form saves with unsupported schema paths but block missing schema. (#1707) Thanks @Glucksberg.
 - Web UI: hide internal `message_id` hints in chat bubbles.
diff --git a/ui/src/styles/components.css b/ui/src/styles/components.css
index 9b253e231..a78e0ef0a 100644
--- a/ui/src/styles/components.css
+++ b/ui/src/styles/components.css
@@ -593,6 +593,7 @@
   border: 1px solid var(--border);
   max-height: 360px;
   overflow: auto;
+  max-width: 100%;
 }
 
 :root[data-theme="light"] .code-block,
diff --git a/ui/src/styles/config.css b/ui/src/styles/config.css
index fcdeeb51f..7d96ac13f 100644
--- a/ui/src/styles/config.css
+++ b/ui/src/styles/config.css
@@ -7,7 +7,7 @@
   display: grid;
   grid-template-columns: 260px minmax(0, 1fr);
   gap: 0;
-  min-height: calc(100vh - 160px);
+  height: calc(100vh - 160px);
   margin: -16px;
   border-radius: var(--radius-xl);
   overflow: hidden;
@@ -24,6 +24,8 @@
   flex-direction: column;
   background: var(--bg-accent);
   border-right: 1px solid var(--border);
+  min-height: 0;
+  overflow: hidden;
 }
 
 :root[data-theme="light"] .config-sidebar {
@@ -245,7 +247,7 @@
   min-height: 0;
   min-width: 0;
   background: var(--panel);
-  overflow-y: auto;
+  overflow: hidden;
 }
 
 /* Actions Bar */
diff --git a/ui/src/styles/layout.css b/ui/src/styles/layout.css
index a3db5d737..c2a5c6fe3 100644
--- a/ui/src/styles/layout.css
+++ b/ui/src/styles/layout.css
@@ -539,6 +539,7 @@
 .stack {
   display: grid;
   gap: 12px;
+  grid-template-columns: minmax(0, 1fr);
 }
 
 .filters {