pywebview: cef hangs while resizing in certain conditions

Specification

• pywebview version: 3.2
• platform / version: Win7 Pro SP1
• cefpython3 version 66.0

Description

Observed reproducible hang during use of cef gui, if triggering some kind of update while resizing the window. Minimally this code usually (but not 100% of the time) hangs on my machine:

import webview
window=webview.create_window('Hello world', html='<h1>hello</h1>')
def reload_and_resize():
    window.evaluate_js("location.reload()")
    window.resize(1000, 420)
webview.start(reload_and_resize, gui="cef")

or while manually resizing something more like this:

import webview,time
window=webview.create_window('Hello world', html='<h1>hello</h1>')
def keep_reloading():
    while True:
        time.sleep(1)
        window.evaluate_js("location.reload()")
webview.start(keep_reloading, gui="cef")

This may be a cefpython issue.