HP Prime editor errors

[Alberto Candel]

In CAS, I did the following calculation (typed as is):

diff(x^2+x / x^2+1)

(actually the fraction is a pretty fraction, but this forum editor does not handle that)

[ENTER] provided the result. I wanted to change some parameters in the function, so I highlighted the above and copy-and-pasted into the edit line. The result of pasting it was

x^2+x / (x^2+1)'

The "diff" has been replaced by a prime ' which only operates on the denominator. This is probably a editing glitch that can be easily fix in subsequent upgrades.