I'm sorry, 4.11.0-041100-generic doesn't show the bug. I performed a clean shutdown and reboot to revalidate it, and now 4.11.0-041100-generic works as well as 4.12-rc1.
I'm sorry, 4.11.0- 041100- generic doesn't show the bug. I performed a clean shutdown and reboot to revalidate it, and now 4.11.0- 041100- generic works as well as 4.12-rc1.