Indigo Renderer - Overlapping with SMILE [O-]

**Steps to Reproduce**
1. Use Indigo Renderer 1.18.0 (Java wrapper)
2. Render a SVG with for the SMILES [O-]

**Expected behavior**
Get the SVG image without any characters overlapping

**Actual behavior**
Molecule gots printed this way

**Environment details:**
- Java Spring Boot v3.2.5
- Indigo v1.18.0
- Indigo Rendered v1.18.0

**Additional context**
The following properties has been set:
- `render-output-format = svg`
- `render-coloring = true`
- `render-stereo-style = none`
- `render-label-mode = hetero`

Tried with the latest RC version too.