When I close the Qt Creator, the application always produces segmentation fault in the FakeVim plugin. The crash occurs in FakeVimHandler::eventFilter() on the line: if (!theFakeVimSetting(...). Debug prints show that this is executed after the destructor ~FakeVimPluginPrivate().

I changed the destructor ~FakeVimPluginPrivate() to delete the pointers there with ptr->deleteLater() instead of delete ptr and now it looks that it works for me - it never crashes.