Strange bug in HP prime Virtual

[Wes Loewer]

(12-04-2021 10:22 AM)Nigel (UK) Wrote:  I don’t think this is a bug. Pressing ENTER repeats the previous command. Pressing Simplify simplifies the previous result and displays it, without the need to press enter.
So pressing Simplify followed by ENTER displays the simplified result first, and then repeats the previous command. Since the previous command here involves Ans, the two results are different.

That does appear to be what is happening, and it would make sense if the command had been simplify(ans). But since the command was simplify(1370/69), then I would describe this as being "unexpected behavior."