Arrow is added to Canvas from empty RXN V2000, V3000 files
- Dominant language
- C++
- Stars
- 406
- Forks
- 134
- Avg merge
- 2d 11h
- Merged PRs (30d)
- 24
Description
**Steps to Reproduce**
1. Add arrow to Canvas and save to RXN:

2. Open the saved RXN file
**Actual behavior**
Arrow is added to Canvas:

**Expected behavior**
Canvas is still empty
**Environment details:**
- Ketcher [Version 2.24.0-rc.3] Build at 2024-08-20; 13:16:59
- Indigo Version 1.23.0-rc.2.0-g6a2a7526a-wasm32-wasm-clang-19.0.0
- OS: Windows 11 Enterprise
- Browser: Chrome, Version 127.0.6533.100 (Official Build) (64-bit)
**Additional context**
- Issue is detected during investigation of Cascade Reaction feature - https://github.com/epam/Indigo/issues/2128
Contributor guide
No contributing guide indexed for this repository
Research direction
Reproduce the issue with the empty RXN V2000 and V3000 files described in the steps, using the referenced Ketcher and Indigo versions if available. Trace the RXN loading path and compare how empty reactions are handled in both formats. Done means reopening an RXN containing only an arrow leaves the Canvas empty, with regression coverage for both versions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100