RAM grows exponentially with Redis 4 - Redis 3 all work fine

When I use Kue with Redis 4 (current stable version) RAM grows exponentially in few time. For example, it achieves 62GB in about 1 minute.

In my case this issue is occurring with 100 workers, that sends MBs of data to a client using job.progress() (e.g. 500MB/s).

Start by reproducing the report with Redis 4, 100 workers, and jobs sending high-volume data through job.progress(); compare the result with Redis 3. Trace the memory growth during progress updates and determine whether the issue is in Kue or Redis, with completion shown by stable memory usage under the reported workload.

Written by the indexing model from the issue text.