Grub Customizer finally got back a normal behaviour after I renamed file "/etc/grub.d/proxifiedScripts/lowlatency", and moved file "/etc/grub.d/LS_lowlatency", which was calling the "proxifiedScripts/lowlatency" script. Which I did because I could notice some incoherence's in this script, just by syntax coloring: some obvious bash reserved words were turning as string data. I considered repairing, but it looked really weird, incoherence's keeping on while previous ones were fixed.
Grub Customizer finally got back a normal behaviour after I renamed file "/etc/grub. d/proxifiedScri pts/lowlatency" , and moved file "/etc/grub. d/LS_lowlatency ", which was calling the "proxifiedScrip ts/lowlatency" script. Which I did because I could notice some incoherence's in this script, just by syntax coloring: some obvious bash reserved words were turning as string data. I considered repairing, but it looked really weird, incoherence's keeping on while previous ones were fixed.
Hoping this ticket will help.
Thanks for Grub Customizer!