To reproduce: 1) Make a bunch of newlines so that you can scroll up a bit. 2) Press and hold "Shift", now press "Alt" (the order is important!). Now release the keys in either order. 3) Now click somewhere in the text. 4) After clicking, Konsole will scroll down to the bottom for some reason. I don't think Konsole should do this. This can be annoying if you're trying to copy-paste stuff out of Konsole and one of your global hotkeys includes Shift+Alt.
This has been fixed in the next release.
Awesome! That was fast, thanks!