fboEnable: false causes a black screen when looking at a glowing entity

The bug

When fboEnable is set to false in options.txt and the glowing effect is being rendered (for example when a mob is hit by a spectral arrow), the screen becomes black.

How to reproduce

1. Go to options.txt and change fboEnable set to false
2. Run Minecraft and open a world
3. Use the following command:

   /summon creeper ~ ~ ~ {Glowing:1,NoAI:1}

   → Your screen will turn black