Reproducible in gtk2.py example on Windows. Error:
Traceback (most recent call last):
File "..\examples\gtk2.py", line 176, in on_exit
self.browser.CloseBrowser(True)
File "browser.pyx", line 330, in cefpython_py27.PyBrowser.CloseBrowser
File "browser.pyx", line 341, in cefpython_py27.PyBrowser.CloseBrowser
File "browser.pyx", line 185, in cefpython_py27.PyBrowser.GetCefBrowserHost
File "browser.pyx", line 180, in cefpython_py27.PyBrowser.GetCefBrowser
Exception: PyBrowser.GetCefBrowser() failed: CefBrowser was destroyed