Row chart with two series - suffix of one series applies to both of them

There seems to be a bug in the UI when setting the suffix on a row chart with multiple series. I have two X-axis series, both of them have a suffix defined, however, the suffix that I add to the first series, goes to both of them. It doesn't matter what I set the second serie's title to, it will always show the suffix of the first one. I have captured a screenshow to show you the problem:

Can you adivise me on an y work around to get the proper sufix for each series?


the problem is that if you have multi series in the X-axis, we can´t generate separate suffixes (they share the same axis)