System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GT 610/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.35

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-11 13:50, hash: rB06312c6d2db8
Worked: (optional)

Short description of error
(Eevee) Bloom is not displayed when rendering with transparent background.

Exact steps for others to reproduce the error

1. Default scene.
2. Check bloom effect and transparent background in render settings.
3. Make the light power sufficient for the glow effect to be noticeable.
4. Render.