Emclient losing focus

I have an issue where emclient window keeps losing focus, in particular when creating a new message.
eg i’ll start a new message, start typing in the address and as i’m typing the message window will vanish, then I have to minimize emclient or tab between windows to find my new message.
Ive uninstalled, reinstalled emclient, updated video driver, checked all the settings, cant find what is causing the issue, any help would be appreciated.