If you changed Midnight Commander build parameters in v11 builds, rollback, check why your QA testers end up in ER after tests or fix screen redraw.
MC screen redraw speed is too slow or redraw algorithm is broken in LibreELEC 11.0.0. Screen is flashing black on any fast actions (navigate, copy or move, paste).
details from two versions in spoiler. I don't see MC version changes, yet LE v10 mc is usable and I don't recall having problems with mc on x86 before update. I might try loading LE v10 x86 live on same box that got migraine inducing MC version as other x86 media box that I can use for testing got GPU incompatible with libreelec 10.0.4.
Display Spoiler
MC is borked
LibreELEC:~ # mc --version
GNU Midnight Commander 4.8.28
Built with GLib 2.75.2
Built with ncurses 6.3
Built with libssh2 1.10.0
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm
With internationalization support
With multiple codepages support
Virtual File Systems:
cpiofs, tarfs, sfs, extfs, ftpfs, sftpfs, fish
Data types:
char: 8; int: 32; long: 64; void 
64; size_t: 64; off_t: 64;
LibreELEC:~ # cat /etc/os-release
NAME="LibreELEC"
VERSION="11.0.0"
ID="libreelec"
VERSION_ID="11.0"
PRETTY_NAME="LibreELEC (official): 11.0.0"
MC is not flashy as hell
LibreELEC-arm:~ # mc --version
GNU Midnight Commander 4.8.28
Built with GLib 2.67.2
Built with ncurses 6.1
Built with libssh2 1.10.0
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm
With internationalization support
With multiple codepages support
Virtual File Systems:
cpiofs, tarfs, sfs, extfs, ftpfs, sftpfs, fish
Data types:
char: 8; int: 32; long: 32; void 32; size_t: 32; off_t: 64;
LibreELEC-arm:~ # cat /etc/os-release
NAME="LibreELEC"
VERSION="10.0.4"
ID="libreelec"
VERSION_ID="10.0"
PRETTY_NAME="LibreELEC (official): 10.0.4"