[Linux] IME does not work with multi-threaded-message-loop

[DZhang456]

Describe the bug "When I use cefsimple, IME can be used normally, but when I embed cef into my qt program, IME cannot be used, which makes me very confused."

To Reproduce Steps to reproduce the behavior: 1.new a qwindow 2.use qwindow->winid() SetAsChild 3.load "google.com"

Expected behavior IME can be used normally,

Versions (please complete the following information):

• OS:Ubuntu 20.04.5 LTS
• CEF Version: 105.0.5195.54

Additional context Does the problem reproduce with the cefclient or cefsimple sample application at the same version? --NO

Does the problem reproduce with Google Chrome at the same version? --NO

Add any other context about the problem here.

[DZhang456]

update--i can reproduce this issue in cefsimple,just set multi_threaded_message_loop is true and don't use CefRunMessageLoop()

[magreenblatt]

Related to #1813

[DZhang456]

hi, @magreenblatt ,Can you help me take a look at this issue? It's easy to reproduce it in cefsimple by following the steps above..Thank you very much