For MBS Xojo Plugins 20.1 we upgrade our Chromium classes. You can try it with the recent 20.1pr4 pre-release version.
The changes include a few fixes for ChromiumCookieManagerMBS and ChromiumWebPluginInfoMBS class which both had crashing bugs, but seem to work fine now. You guys can be happy to use a high level language like Xojo where the compiler always makes sure your delegates have the right parameters as any mismatch can cause hard to track bugs later. Luckily we fixed it and now leverage C++ compiler to test those, too.
With newer plugin you can use Chromium with all Xojo versions since the introduction of WebKit support. We now support 3 different versions of the Chromium Embedded Framework used by Xojo with the same plugin. When you start using the plugin classes, we check which CEF version is used and use the right function pointers. Enjoy!