Unidentified Sustain activated with String Section (Bandlab)?

I’m using Cubase 12.0.30 and there’s an issue while I’m arranging a string section with String Section VSTi (A giveaway from Cakewalk by Bandlab). When I recorded midi track, everything in my MONITOR worked properly; HOWEVER, when it was played back, all midi notes were NON-STOP, making previous notes coincide with following notes. As a result, my track became chaos