Favorites-bookmarks sidebar popping up in Safari on the left when in full window mode
I came across a problem, which is really annoying. When in split screen or windowed mode of Safari, the bookmark/favorites bar pops up on the left side, if the mouse cursor is on the left. It occurs quite often "by accident", and there is no way for me to cognitively "not to send the mouse cursor to the left edge".
I browsed through the settings of Safari but could not find anything which would suit my needs.
Can anyone help me on this one please?
MacBook Pro with Retina display, OS X El Capitan (10.11)