### 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
k->set_unicode(unicode);
	k->set_echo(p_echo);
	if (k->get_keycode() == Key::BACKTAB) {
		
		k->set_keycode(Key::TAB);
		k->set_physical_keycode(Key::TAB);
		k->set_shift_pressed(true);
	}
	
	
	if (!k->is_pressed()) {
		if (k->get_keycode() == Key::SHIFT) {
			k->set_shift_pressed(false);
		} else if (k->get_keycode() == Key::CTRL) {
			k->set_ctrl_pressed(false);
		} else if (k->get_keycode() == Key::ALT) {
			k->set_alt_pressed(false);
		} else if (k->get_keycode() == Key::META) {
			k->set_meta_pressed(false);
		}
	}
	bool last_is_pressed = Input::get_singleton()->is_key_pressed(k->get_keycode());
	if (k->is_pressed()) {
		if (last_is_pressed) {
			k->set_echo(true);
		}
	}
	Input::get_singleton()->parse_input_event(k);
}
Atom DisplayServerX11::_process_selection_request_target(Atom p_target, Window p_requestor, Atom p_property, Atom p_selection) const {