diff --git a/.changeset/quick-bugs-press.md b/.changeset/quick-bugs-press.md
new file mode 100644
index 0000000000..608b81470e
--- /dev/null
+++ b/.changeset/quick-bugs-press.md
@@ -0,0 +1,5 @@
+---
+'@evidence-dev/core-components': patch
+---
+
+Fix datatable column header tooltips in fullscreen mode
diff --git a/packages/ui/core-components/src/lib/atoms/fullscreen/Fullscreen.svelte b/packages/ui/core-components/src/lib/atoms/fullscreen/Fullscreen.svelte
index 343fd3b71a..d765e16fa4 100644
--- a/packages/ui/core-components/src/lib/atoms/fullscreen/Fullscreen.svelte
+++ b/packages/ui/core-components/src/lib/atoms/fullscreen/Fullscreen.svelte
@@ -66,6 +66,7 @@
 
 <dialog
 	use:popup={open}
+	data-portal
 	class="w-[90vw] rounded-lg fixed border border-base-300 text-base-content shadow-lg bg-base-100 {open
 		? 'slideIn'
 		: 'slideOut'}"
diff --git a/packages/ui/core-components/src/lib/unsorted/ui/Info.svelte b/packages/ui/core-components/src/lib/unsorted/ui/Info.svelte
index f18d203eb2..47dc9832b1 100644
--- a/packages/ui/core-components/src/lib/unsorted/ui/Info.svelte
+++ b/packages/ui/core-components/src/lib/unsorted/ui/Info.svelte
@@ -44,7 +44,10 @@
 		</slot>
 	</span>
 
-	<div slot="content" class="bg-base-100 p-2 rounded-md text-base-content text-xs max-w-52">
+	<div
+		slot="content"
+		class="bg-base-100 p-2 rounded-md text-base-content text-xs max-w-52 text-left font-normal"
+	>
 		<p class="leading-relaxed text-pretty">
 			{description}
 		</p>