Memory overview not visible under Free license

Our development servers are running under the XenServer Free license. The old ones are 6.5, the new ones will be 7.5.

I understand that with XenServer 7.3, Dynamic Memory has been moved into a standard license as per https://xenserver.org/blog/entry/xenserver-7-3-changes-to-the-free-edition.html. As we disabled "Dynamic memory" manually for every guest years ago, I thought we would be unaffected by that change.

However, in XenCenter, I can see a bar graph memory overview of the hosts with 6.5 (https://i.imgur.com/PsjZbBQ.png), which helps greatly to find space for new guests, because "big" guests with lots of RAM are displayed prominently.

On machines with 7.5, I cannot see the bar graph any more (https://i.imgur.com/UVoBx8g.png), while I would expect a behaviour similar to behaviour earlier XenServer versions show if the guest's OS does not support dynamic memory: the bar graph still visible, but the memory setting cannot be changed (https://i.imgur.com/2XoNFPE.png).

Was the removal of the bar graphs for the free license intended or can this be counted as a bug? If it was intended, did I overlook the release notes entry, or was it considered too minor to put it in there?