Kulverstukas Rosaviation sent today urgent addition to flight manual of 204/214.
"Att! In case of reverse not switching on after levers in position "small reverse" (reverse idle?) (no green light "small reverse") IMMEDIATELY move levers fully back (reverse off). Do not use reverse while on rwy."
Yes, because if thrust is increased without reverse, one has an a/c that wants to accelerate, even if it is not the wish of the crew.