Bugsquad note: This issue has been confirmed several times already. No need to confirm it further.

Godot version

4.0-dev.20211004_win64

System information

Windows 10

Issue description

When using OptionButton and choosing canvas_items mode in Project Settings->Display, popup of OptionButton is placed and scaled wrong (fonts too). When using "disabled" mode it is placed correctly.

I originally thought that this is related to my custom size of display, but it seems only "canvas_items" does this.

I've added project, so you can test. but it's pretty obvious, I have no scaling or complex settings on nodes.

Steps to reproduce

Set canvas_items mode and use PopupButton.

Minimal reproduction project

game-client_issue_popup_menu.zip