Just an FYI about some weird behavior that seems new to me (creating issues that we had not had previously), at least in the most recent SR for R6 (see attached SystemInfo for details). We have a couple of plug-ins using dockable WPF panels that we and our clients frequently use in parallel, and we noticed that on startup (after plug-in load), for those plug-ins where the panels weren’t open in the last session, a Rhino.UI.Panels.Closed event is firing where the e.Document is null, and for those that were, a Rhino.UI.Panels.Show event is firing with the same event args issue.
Panel-Closed.txt (2.2 KB)