I have run into a problem with my Java IDE (Eclipse), that occurs only on Wayland. I am now running X11 on Neon, as the IDE works just fine there.
As mentioned in the bug report on eclipse.org, this crash occurs when the content assistant tries to put up flyover assistance.
Other reading has me believing this is related to libwebkit2gtk, as one poster said downgrading that (on Wayland/Gnome) fixed his issue.
So, the question is, where should this be reported. I have reported it on Eclipse.org, but it seems to me this is more of a library issue.