kernel 5.10.119 caused the values of /proc/sys/kernel/random/entropy_avail and poolsize to be 256

After update to kernel 5.10.119, /proc/sys/kernel/random/entropy_avail became stuck to 256 and does not change when moving the mouse. It used to be greater than 3000. # cat /proc/sys/kernel/random/entropy_avail 256 Also, /proc/sys/kernel/random/poolsize went down to 256. It used to be 4096. Is this a bug? Can you trust the new random number generator of this kernel with only 256 available entropy?