Clicking outside popup in single window mode will pass the event

[KoBeWi]

Tested versions

4.3 rc1 and earlier

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 31.0.15.4633) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

When you run editor in single window mode and click outside a popup to close it, the popup is closed, but the event is passed further.
In multi window mode closing the popup by clicking outside will block the event from propagating further.

This inconsistency caused #93718

Steps to reproduce

1. Open editor in any window mode
2. Open a popup menu
3. Click a node in 2D editor while the popup is open
4. Repeat the steps with other window mode and compare results

Minimal reproduction project (MRP)

N/A

[Giganzo]

Does popup include the tooltips?
It's a bit annoying that they eat clicks when you want to click on the revert button, as you often have to click on the revert button twice to reset the property.

Edit: yes, applies to tooltips as well.

[Jowan-Spooner]

I came across this behavior recently and wished there was a way to configure this manually, per popup, because I actually wanted a pop-up in multi-window mode (in an application, not the godot editor) to close but NOT consume the event, even though I'm not sure if that's even possible (but sounds like it could be useful for tooltips too).
Doubt this is in scope of a fix PR though 😅