Just installed Ubuntu-Mate 18.04.1 on an i3 system. I needed dual boot with Windows 7 and ran into the “no EFI partition” grub2 install failure bug. I re-ran Gparted and made an EFI partition. The re-install completed but wouldn’t boot. So I booted the install media to “Try Ubuntu” again and installed Grub customizer. I reinstalled the MBR with it and am now dual booting successfully. I got these “tips” from the webpage link in the failure message. The discussion makes it look like the bug is fixed, sure wasn’t for me. This is a show stopper bug for normal folks who haven’t achieved assistant-guru status and makes it seem like the whole system has been hosed by the installation.
Second issue, using the software boutique, Etcher-IO installation failed: “wrong package name”.
My initial reaction to the main menu changes from 16.04 is negative. I think someone has Windows envy and has been looking at Windows 10 too much