[other] GRUB with themes - boot terminal/console is black/blank before plymouth splash shows

Hello,

I'm ruing various Ubuntu 16.04 "flavours" (KDE Neon, elementaryOS Loki, Kubuntu etc) and if I install a GRUB theme (like KDE Breeze GRUB theme, or few others) then after selecting the OS to boot (I dual boot with Win10) the GRUB graphical console/terminal box pops up but is all-black (blank) with no "Loading linux..." etc output. I have "quiet splash" set in /etc/default/grub FYI and am ruing a Intel Skylake Core i5-6500 CPU with on-CPU graphics (no discrete GPU card).

My question is, is there a way to prevent the console from showing before the Plymouth splash shows up, or at least, if the console must show, then how to display the echo-ed text output in it?

Cheers!