Show/hide Dasboard ui side menu with groups

Hi everyone. I can't set in dashboard setup to hide/show side menu in UI. I'm trying to do this by clicking 'Options' in Site setup, but there is nothing changing (click to show side menu).
I've noticed that there is'nt smal icon side by dashboard title.

There is no icon as it's is current set to always open.
you may need to refresh the page to get the new setting.

I tried to change the settings many times, but unfortunately the "Click to show side menu" option does not want to activate in any way. The side menu on the Dashboard screen can not be minimized anyway. Is it possible that I have incorrectly implemented the Dashboard intallation?

I have the same problem, have you found a solution yet ?

Which version of dashboard are you using ? Which browser ?

RPi 2 -Side Menu always visible no matter what I do
Dashboard V 2.15.4
Node Red 0.20.5.
Originally had lower versions of both Dashboard and Node Red, same problem and I then upgraded both, no change.

RPi 3B+ - Side menu retracts when icon clicked, works fine
Dashboard V2.15.2
Node Red 0.20.5
I use Chrome browser for both

Upgraded the RPi3B+ to Dashboard v 2.15.4, still works fine

Works fine with RPi3b+ and Dashboard v.2.14.

Yes my RPi 3B+ works ok, but the RPi 2 does not