diff --git a/.changeset/slimy-pillows-vanish.md b/.changeset/slimy-pillows-vanish.md
new file mode 100644
index 0000000..48cec3d
--- /dev/null
+++ b/.changeset/slimy-pillows-vanish.md
@@ -0,0 +1,5 @@
+---
+"paneforge": patch
+---
+
+fix: issue where isPaneCollapsed wrongfully returned false due to rounding issues
diff --git a/packages/paneforge/src/lib/paneforge.svelte.ts b/packages/paneforge/src/lib/paneforge.svelte.ts
index aa55e6c..a80ba6c 100644
--- a/packages/paneforge/src/lib/paneforge.svelte.ts
+++ b/packages/paneforge/src/lib/paneforge.svelte.ts
@@ -336,7 +336,7 @@ export class PaneGroupState {
 			paneSize,
 		} = paneDataHelper(paneDataArray, pane, layout);
 
-		return collapsible === true && paneSize === collapsedSize;
+		return collapsible === true && areNumbersAlmostEqual(paneSize, collapsedSize);
 	};
 
 	expandPane = (pane: PaneState) => {