Huge memory increase after upgrading to 1.5

After upgrading from 1.4 to 1.5 version at aprox 24 hours my server memory goes full to 64GB and is swapping .Only a "service lsws restart" can clear the memory ,like 80%. No config settings changed after the upgrade.

Linux 16.04, openlitespeed 1.5


It seems openlitespeed may have a memory leak issue. Can you check its usage of memory?
If it is keep increasing, it probably is because of this issue.