IntelliJ Plugin: Ctrl+Z history pollution and possible data loss

[alshain]

Before submitting your bug report

• I've tried using the "Ask AI" feature on the Continue docs site to see if the docs have an answer
• I'm not able to find a related conversation on GitHub discussions that reports the same bug
• I'm not able to find an open issue that reports the same bug
• I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- Continue version: 1.0.59
- IDE version: IntelliJ 2025.3.2

Description

Prior closed issue: #2245 (closed due to inactivity, issue had not been acknowledged)

When using Continue inline chat to make changes (possibly other modes as well), for every line changed, Continue seems to add two entries to the undo stack.

This creates issues when undoing changes:

• It's difficult to tell where Continue's changes start and stop (the simple change below takes 16 presses of Ctrl+Z to undo)
• It can push my own changes out of the undo stack
• It's simply very annoying to have to press Ctrl+Z that many times

It would also be neat if Continue could take a snapshot in the local history and tag it with the prompt that was used before and after.

To reproduce

1. Use Ctrl+I
2. Have it change more than one line
3. Accept all changes
4. Use Ctrl+Z to undo

Log output