Bug? (Exponential SimpleFunction with Negative Variable)

Not sure where to post potential bug reports?

If you define a negative value in the graph and call it using these two variations:
both of these should return the same function y=b^x.
Example: if b = -2 it appears g(x) is being calculated as -1*(2^x)

*This is a cross-post after noticing the bug in this convo:

Thats definitely a good catch but not a bug!

interpolating with ${} take the numeric value of -2 and converts it into text then constructs the function using that text.

Your function g when b=-1 actually reads simpleFunction("-1^x") instead of a function b^x that evaluates at a numeric value of -1 for b.