Issue with In Memory hkckp file in standby recovery mode

Hello,

I have two instance configured in Always On High Availability with another one in another Datacenter :

NODE1 (master) + NODE2 (slave not readable) ==> Datacenter 1

NODE3 (standby read only) ==> Datacenter 2

On NODE1/2 i have 2 tables InMemory configured with DURABILITY = SCHEMA_ONLY on database DB1

On NODE1/2 i have 44 files with 2Gb total size in $HKv2 directory.

but the issue is on NODE3 where DB1 is in Standby mode with read only.

Archivelog are restored in DB1 on NODE3 with NORECOVERY and STANDBY mode

ON NODE3 i have more than 5K files with 253Gb total size in MSSQL_DATA\$HKv2 directory

chkcp files for InMemory table are delete where checkpoint is made, for NODE1/2 there is no problem.

But on read only database in NODE3 the chkcp files are not purged maybe because the database is read only and deleting chkcp file need to write in database for change ?

Anyone else have to deal with this issue ?

Any help is welcome.

Thanks

Christophe