Reproduction steps:
1. Open attached project
2. Open the "MainScene" scene
3. Open the profiler window and click on the "Rendering" field
4. Play the scene and observe the profiler
5. Notice that the batch count on 5.3.0f4 is 11, but on 5.2.1f1 the batch count is 2. This means that, each particle system takes 1 separate batch to be drawn, instead of drawing all of them in 1 batch.

Actual result: Each particle system requires separate batch to be drawn (profiler displays 11 batches)

Expected result: All particle systems should be drawn in one batch (profiler displays 2 batches)

Reproduced on: 5.3.0f4, 5.4.0a6
Doesn't reproduce on: 5.2.1f1