Undo in the calculation editor undoes ALL of my changes, not just the last one
Operating system version
Description of the issue
When I'm working in the calculation editor and make a typo or paste something wrong and hit command-z, all of my changes get reverted to the state the calc was in when I entered.
Steps to reproduce the problem
Enter the calculation editor and start working on a calculation, hit command z and watch it all vanish (or revert to the original state)
It should undo my last command, like every other text editor.
It reverts to the original state.
Use a real text editor for calculations.