Files get locked when sending as an attachment

If I attach a file to an to email and send them email, the file gets a lock which never gets released. Only after completely shutting down emClient. And this is very annoying.

I see people reported this problem earlier and it has been fixedin some earlier releases.

I never experienced this problem with version 8, but recently I upgraded to 9.2.1222 and I’m facing this issue.