Different behavior between "," and "." formats in RPN mode

[Jose Gonzalez Divasson]

I was trying to follow Eddie Shore's video tutorial on Advanced RPN functions on the Prime. I wanted to do it since I get many errors when trying to use CAS functions in home (since i much prefer RPN)

As I am "mainland European", I use "," as decimal point. I have chosen space as thousands separator.

An example Eddie uses is factoring 76 in RPN

When I enter, as in the video:

76 - level 1
CAS.ifactor(1) edit line

I get syntax error, while Eddie does not.

Checking what could be the error, I change number format to decimal point instead. Now it works (and there was no decimal point in sight)

Is this a known bug? It is advisable to use always decimal point?

I have been able to replicate this error in a number of other CAS functions, but now I don't remember them.