Yammer Design options don't work

If you are network admin on Yammer, you would have been asked by users to change the look and feel of a Yammer page. One such requirement was given to me.

The request was to put a company logo and image at the top of the Yammer page. Ideas seems very simple. You go to network admin section where you will see and option called design. Within this section, you can see:

1. Select Network Colors
2. Customize Network logo
3. Customize network masthead
4. Customize logo for emails

It allows you to choose colors and pictures on the page. However after saving the customizations, you don't see any change on the yammer page. It seems that Microsoft has deprecated this functionality and apart from changing the logo for emails , other options don't work.

In case your network is slow or you may see the chosen logo and masthead momentarily before Office 365 suite covers it up. So in short, Yammer design options don't work.