Problem: When an image macro is used in the regular chat, the result is - as expected - an image. The issue is that the chat notification widget in the header shows the actual image macro string, which doesn't look nicely integrated:
Possible solution: Wouldn't it make more sense to concatenate the strings in this case of parameters 'above' and 'below' and show these instead? So the information is transported to the notification widget, just presented in a way that fits the context. E.g. above = THIS IS, below = AWESOME, the message in the notification will be THIS IS AWESOME.