buggy execution of api methods from 'pywebviewready' listener

Specification

• pywebview version: master branch, versions 3.4 and 3.2
• operating system: Ubuntu 18.04 and 20.04 (64 bits)
• web renderer: gtk

Description

This works :

  window.addEventListener('pywebviewready', function() {
        pywebview.api.test1()
    })

Only test2() seems to be called, test1() is not called :

  window.addEventListener('pywebviewready', function() {
        pywebview.api.test1()
        pywebview.api.test2()
    })

With setTimeout, test1() and test2() are called :

  window.addEventListener('pywebviewready', function() {
         setTimeout('pywebview.api.test1()',1000)
        pywebview.api.test2()
    })

Note : the bug seems to occur since last ubuntu updates, it was working before. Here is list of packages upgrades :

2021-05-11 09:42:29 upgrade gir1.2-lightdm-1:amd64 1.30.0-0ubuntu3.1 1.30.0-0ubuntu4~20.04.1
2021-05-11 09:42:30 upgrade liblightdm-gobject-1-0:amd64 1.30.0-0ubuntu3.1 1.30.0-0ubuntu4~20.04.1
2021-05-11 09:42:35 upgrade alsa-utils:amd64 1.2.2-1ubuntu2 1.2.2-1ubuntu2.1
2021-05-11 09:42:44 upgrade iio-sensor-proxy:amd64 2.8-1 2.8-1ubuntu1
2021-05-11 09:42:49 upgrade python3-problem-report:all 2.20.11-0ubuntu27.16 2.20.11-0ubuntu27.17
2021-05-11 09:42:53 upgrade linux-firmware:all 1.187.11 1.187.12
2021-05-11 09:44:14 upgrade libatopology2:amd64 1.2.2-2.1ubuntu2.3 1.2.2-2.1ubuntu2.4
2021-05-11 09:44:17 upgrade libasound2:amd64 1.2.2-2.1ubuntu2.3 1.2.2-2.1ubuntu2.4
2021-05-11 09:44:18 upgrade libasound2-data:all 1.2.2-2.1ubuntu2.3 1.2.2-2.1ubuntu2.4
2021-05-11 09:44:22 upgrade libwacom-bin:amd64 1.3-2ubuntu1 1.3-2ubuntu3
2021-05-11 09:44:26 upgrade python3-update-manager:all 1:20.04.10.6 1:20.04.10.7
2021-05-11 09:44:27 upgrade update-manager-core:all 1:20.04.10.6 1:20.04.10.7
2021-05-11 09:44:31 upgrade python3-apport:all 2.20.11-0ubuntu27.16 2.20.11-0ubuntu27.17
2021-05-11 09:44:32 upgrade apport-kde:all 2.20.11-0ubuntu27.16 2.20.11-0ubuntu27.17
2021-05-11 09:44:36 upgrade thermald:amd64 1.9.1-1ubuntu0.3 1.9.1-1ubuntu0.4
2021-05-11 09:44:44 upgrade libwebkit2gtk-4.0-37:amd64 2.30.6-0ubuntu0.20.04.1 2.32.0-0ubuntu0.20.04.1
2021-05-11 09:44:46 upgrade libjavascriptcoregtk-4.0-18:amd64 2.30.6-0ubuntu0.20.04.1 2.32.0-0ubuntu0.20.04.1
2021-05-11 09:44:47 upgrade gir1.2-webkit2-4.0:amd64 2.30.6-0ubuntu0.20.04.1 2.32.0-0ubuntu0.20.04.1
2021-05-11 09:44:48 upgrade gir1.2-javascriptcoregtk-4.0:amd64 2.30.6-0ubuntu0.20.04.1 2.32.0-0ubuntu0.20.04.1
2021-05-11 09:44:52 upgrade libwacom2:amd64 1.3-2ubuntu1 1.3-2ubuntu3
2021-05-11 09:44:53 upgrade libwacom-common:all 1.3-2ubuntu1 1.3-2ubuntu3
2021-05-11 09:44:57 upgrade alsa-ucm-conf:all 1.2.2-1ubuntu0.6 1.2.2-1ubuntu0.7
2021-05-11 09:45:01 upgrade lightdm:amd64 1.30.0-0ubuntu3.1 1.30.0-0ubuntu4~20.04.1
2021-05-11 09:45:08 upgrade apport:all 2.20.11-0ubuntu27.16 2.20.11-0ubuntu27.17
2021-05-11 09:45:17 upgrade tmux:amd64 3.0a-2ubuntu0.2 3.0a-2ubuntu0.3
2021-05-11 09:45:22 upgrade libxmlb1:amd64 0.1.15-2 0.1.15-2ubuntu1~20.04.1

[Stevy64]

Hello !

It works for me on Ubuntu 20.04 LTS VM after downgrading some packages mentionned by romain-marie :

I downgraded the following packages from 2.32.0-0ubuntu0.20.04.1 to 2.28.1-1 :

libwebkit2gtk-4.0-37:amd64 libwebkit2gtk-4.0-37:amd64 libwebkit2gtk-4.0-doc libjavascriptcoregtk-4.0-18:amd64 gir1.2-webkit2-4.0:amd64

Output [pywebview] Using GTK : 
aaaaaa
bbbbbb

But not working with Pyqt5

I get this output :

bbbbbb
js: Uncaught TypeError: channel.execCallbacks[message.id] is not a function

— Thanks ^^ —

[github-actions[bot]]

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