trouble with cut and paste

In the data editor, cut (CTRL+X in Shortcut settings) and paste (CTRL+V) don't work by keyboard (but work with context menu). Copy (CTRL+C) works properly. Strangely, paste works with CTRL+SHIFT+V (but there's no trace of it in Shortcut). Is it a bug or a feature?

Just tested that in the inplace editor and in the popup text editor, and both worked as expected:

You could have a look at Tools > Preferences > Shortcuts. And when you started HeidiSQL, watch out for lines saying "Could not apply SynEdit keystroke shortcut ..."