You are talking about thing that is happening since v11.0.0. I think nano is impacted by same ridiculous screen redraw too. You probably got typo in "LE1`2.0.3" or time machine.
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LibreELEC 11.0.0 MC 4.8.28 Migraine edition
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…
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…
tokul