I've been seeing this actually and filed a new ticket to look into it in the future.
The issue is that columns of just numbers aren't being rendered according their associated currency.
Selecting a column of type Amount or Position or Inventory should render better.
This stems from the fact that I wrote the code to render tables of results before I did the work on display_context, and now I probably need to revisit that to integrate this, which would be better.
Unfortunately non-trivial work this will take some time to review.
OTOH I need to implement CSV rendering very soon so I might get to it, not sure.
Juggling lots of different tasks at once (see branches).