Editor: Duplication of events

[eprikazchikov]

Description

Engine duplicates update events during one frame in case of Viewport and Preview in split-screen mode.

Prerequisites

WorldEditor is run and a project is opened. Viewport and Preview widgets in split-screen mode.

Steps to Reproduce

1. Create a sample NativeBehaviour code from the Additional Information section
2. Launch the Game Mode (Ctrl+G)
3. Press and release Arrow Up key on the keyboard
4. Press and release Mouse Left
5. Check the console output in the editor

Expected behavior:

Messages must appear only once

Actual behavior:

Message is doubled

Reproducibility:

The issue reproduces constantly

Versions

2019.3

Additional Information

    void update() {
        if(Input::isKeyDown(Input::KEY_UP)) {
            Log(Log::ERR) << "KeyPress";
        }
    }