I'm sure I had sometimes the same problem sometimes also with 5.9.3 and one before. (I don't know the exact release.), but with. 5.9.4 it happens always few seconds after opening new session.
I'm sure I had sometimes the same problem also with 5.9.3 and one before (I don't know the exact release), but with 5.9.4 it happens always few seconds after opening a new session.