### Godot version

Master (0ddd9c3e8f9088fa139e25b2903289d727073e12)

### System information

PopOS 22.04 - Intel integrated graphics - all backends

### Issue description

When there are popup windows in the editor, I cannot click on the "Confirm"/"Cancel" type buttons at the button. 

I have the issue both in the project manager (importing projects I can click on files etc. but cannot click "open") and when running the editor (cannot click "Save&Quit" etc.)

Sometimes the editor correctly highlights the buttons and I can use the arrow keys to navigate the buttons and "enter" to confirm my selection.

_I can navigate the editor closing dialogue with tab/arrow keys_
![Screenshot from 2023-01-16 14-24-06](https://user-images.githubusercontent.com/16521339/212774269-d784ea5e-5921-4460-9124-48978939c8e7.png)

_I can't navigate the project import dialogue with tab/arrow keys_
![Screenshot from 2023-01-16 14-29-00](https://user-images.githubusercontent.com/16521339/212774683-0a80795a-eed4-4e65-b2ca-3562c25d71fd.png)


### Steps to reproduce

Run the editor

### Minimal reproduction project

Reproducible in the project manager
Key modifiers = p_keycode & KeyModifierMask::MODIFIER_MASK;
	Key keycode_no_mod = p_keycode & KeyModifierMask::CODE_MASK;
	unsigned int xkeycode = KeyMappingX11::get_xlibcode(keycode_no_mod);
	KeySym xkeysym = XkbKeycodeToKeysym(x11_display, xkeycode, 0, 0);
	if (is_ascii_lower_case(xkeysym)) {
		xkeysym -= ('a' - 'A');
	}
	Key key = KeyMappingX11::get_keycode(xkeysym);
	
	
	if (key == Key::NONE) {
		return p_keycode;
	}
	return (Key)(key | modifiers);
}
DisplayServerX11::Property DisplayServerX11::_read_property(Display *p_display, Window p_window, Atom p_property) {