bridge speed status and graphing

I am using formal bridges for each network - for example I use bridge-internet instead of a port (like ether7) also in situation where this port is the only part of the bridge. That’s because port assignment may be changed in the future.

The problem is that speed reporting is not working as I expect - see the screenshot. There is big traffic on ether7-sanet, which is the only part of bridge-internet, but there is almost no traffic on the bridge. However, traffic on ether1-lan is the same as on bridge-lan. Why?

That bothers me because of the graphs - I’d like to have graph for the bridges.

Is this a bug or may I solve it somehow? This problem is on CCR1009.