How to reproduce:
1. Open user's attached 'Shaders Playground HDRP.zip' project
2. Close Maintainer window
3. Open 'Simple Dissolve' Scene
4. Enter Play Mode
5. Observe the Game View
6. Open 'Simple Dissolve' Shader Graph
7. Right-click mouse on the Color node -> Convert To Property
8. Click Save Asset
9. Observe the Game View

Expected result: GameObject does not bloom
Actual result: GameObject blooms

Reproducible with: ShaderGraph 7.0.1 (2019.3.0a12, 2019.3.0b4, 2020.1.0a5)
Not reproducible with: Shader Graph 6.9.1 (2019.2.7f1), Shader Graph 6.5.3 (2019.3.0a11)
Could not test: 2017.4.32f1 because Package Manager is not introduced, 2018.4.9f1, 2019.2.0a1 due to Shader Graph, LWRP errors, pink textures

Note: Reproducible on Windows, macOS