**System Information**
Operating system: Windows 10 Pro 64-bit
Graphics card: NVIDIA GeForce RTX 2080 Ti
**Blender Version**
Broken: Blender 2.83 Alpha, February 21, 10:10:33 - 1f8f4c8cfeaf
Worked: (optional)
**Short description of error**
Sculpt Mode's Airbrush stroke type stops after initialization, while it should keep auto-adding new strokes using the Rate value.
**Exact steps for others to reproduce the error**
# Initialize Sculpt Mode by Control + N, then choosing Sculpting.
# Press the 'E' key and choose Airbrush.
# Press and hold LMB on the mesh surface. Only one stroke is performed, then Airbrush stops.