Crash when closing auto-suggestion window on Wayland

 I get a crash using the wayland-egl backend whenever I do the following:

• type code and either manually trigger auto-suggestion using ctrl-space OR it pops up automatically
• skip the auto suggestion by pressing ESC

In this case qtcreator crashes totally. It happens every time, 100% reproducible...

I'm running qtcreator 4.7.2 on Arch Linux with kernel 4.18.16 on Qt 5.11.2 with the backend "wayland-egl".

Console says:

qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
zxdg_shell_v6@32: error 2: xdg_popup was destroyed while it was not the topmost popup
The Wayland connection experienced a fatal error (Protocol error)
ConnectionServer error: "QLocalSocket: Remote closed" "/tmp/QtCreator-RIjUkf/ClangBackEnd-3829"
Job 1, 'qtcreator' has ended