Upgraded to 7.6 - webfig left menu dissapeared

Hi I just upgraded to 7.6 RouterOS from 6.5 on three different devices - CRS326-24G-2S+, RB4011iGS+5HacQ2HnD and a CRS112-8P-4S.
On all three, the left Webfig menu has disappeared and only comes back if I refresh my browser (I’m using Mac with Chrome, but I tried this on Safari and Windows with Edge) as explained here: http://forum.mikrotik.com/t/what-to-do-when-webfigs-left-menu-is-missing/154231/1 but it’s not really a solution as I get kicked out and therefore have to login twice every time to every device.

What’s the solution to this? Is there some file that needs touching in the CLI?

PS, I found the help (?) autocompletion seems to have disappeared from the CLI? Is there some CLI option to get it back? Now if I type a question mark, I just get a red line appear. F1 seems to work but this seems a non-intuitive replacement for the question mark…