Hi,
I was just about to write saying I can't see it on my DS4k but when you said to select the vertical measurment menu I tried that too and then the graphic in the help menu is corrupted. I wouldn't say that the help system crashes, I can still select items and display the text for it - it's only the graphic as far as I can see. I've never used the help before, don't know if it's been like that before or if it's am issue introduced with the latest firmware.
I don't really like the new look of counter display either, it was better like it was. I hope they'll revert that back.
But, as I said in the SA thread, Rigol isn't monitoring these forums, we need to report the issues to them.