While in the scope of MGNLUI-5119 I tried to update Vaadin to 8.8.2 in compatibility addons too. This caused

Compilation failure
[ERROR] /Users/fgrilli/devel/workspace/magnolia/vaadin-compatibility-addons/vaadin-compatibility-context-menu/src/main/java/com/vaadin/contextmenu/client/MyVOverlay.java:[22,24] setApplicationConnection(com.vaadin.client.ApplicationConnection) in com.vaadin.contextmenu.client.MyVOverlay cannot override setApplicationConnection(com.vaadin.client.ApplicationConnection) in com.vaadin.client.ui.VOverlay
[ERROR]   overriding method is static

due to a workaround used by https://github.com/vaadin/context-menu in version 2.0.0 which is no longer compatible with the latest Vaadin.
Trying to update the addon to its latest 3.0.0 version, a complete rewrite (still with an API backward compatibility, so they claim), fails to apply some patch of ours.

It is no so clear, at least to me, how that patch should be changed, nor if it is actually still needed.
Failing to fix this has repercussions on the widgetset compilation which fails with a message similar to the one mentioned above.

Finally, given the update to Vaadin 8.8.2 the addons version will probably need a bump to 1.3