Ctrl-Z should only work in the active folder

## Prerequisites
- [x] I have searched open and closed issues for duplicates.

## Feature
**Is your feature request related to a problem? Please describe.**
The `Ctrl-Z` command silently reverses actions in folders other than the one currently being displayed. This can be dangerous because there is no warning that anything happened.

**Describe the solution you'd like**
`Ctrl-Z` should only work on the active folder.

**Existing work**

None as far as I'm aware.

**Describe alternatives you've considered**

Perhaps keep the functionality but add a warning message that something happened in a folder different from the one currently being shown?

**Additional context**