Tooltips don't scroll when editor is in Single Window Mode

[ydeltastar]

Tested versions

v4.3.beta.custom_build [6084499]

System information

Godot v4.3.beta (6084499) - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3070 (NVIDIA; 31.0.15.4633) - AMD Ryzen 9 7950X 16-Core Processor (32 Threads)

Issue description

Tooltips with scrollable text don't scroll when the editor is in Single Window Mode.
It works when this option is disabled.

Steps to reproduce

• In the editor settings, enable Interface > Editor > Single Window Mode and restart the editor.
• Hover over properties with scrollable tooltips like Node > Process > Thread Group > Group. It doesn't scroll.

Minimal reproduction project (MRP)

N/A

[matheusmdx]

The scroll in tooltips was introduced in #89058, before that tooltips too big like the thread group tooltip was like that:

Probably is related to the same problem that cause issues here #92382 (comment) in single window mode

[capnm]

The window does receive focus correctly, but the subsequent detection of mouse/pointer events in interface/editor/single_window_mode is broken in the new >v4.2.2 focused tooltips. The events pass through to the background UI

(I only looked at this under Linux x11 1e0015a)...