RediSearch & Redis search data problem


We are migrating the system from
Redis 5.0.5 + RediSearch 1.x.x
Redis 6.2.6 + RediSearch 2.6.2.

We are facing the following problem:
If there is a record “School 11 Petrozavodsk - paid services” in the target system we make a search
by the following filters:
? School 11 pe
? School 11 petr
? School 11 petro
this record is not found.
When searching on “School 11 petrosav” the record is successfully found.

On a system with Redis 5.0.5 + RediSearch 1.x.x, this behavior is not observed.

Could you please tell me what could be the problem?