diff --git a/macos/Sources/Features/Terminal/BaseTerminalController.swift b/macos/Sources/Features/Terminal/BaseTerminalController.swift
index 432345627..8acda4ed1 100644
--- a/macos/Sources/Features/Terminal/BaseTerminalController.swift
+++ b/macos/Sources/Features/Terminal/BaseTerminalController.swift
@@ -152,8 +152,12 @@ class BaseTerminalController: NSWindowController,
         // screen then we clamp it back to within the screen.
         guard let window else { return }
         guard window.isVisible else { return }
-        guard let screen = window.screen else { return }
 
+        // We ignore fullscreen windows because macOS automatically resizes
+        // those back to the fullscreen bounds.
+        guard !window.styleMask.contains(.fullScreen) else { return }
+
+        guard let screen = window.screen else { return }
         let visibleFrame = screen.visibleFrame
         var newFrame = window.frame