"Bouncing the dock icon" not working on HipChat 4.0 for Mac

Summary

"Bouncing the dock icon" not working

Environment

HipChat 4.0 for Mac

Steps to Reproduce

1. Go in settings
2. Notifications
3. Under Rooms, select Loud
4. Under Notify me by, select Bouncing the dock icon

Expected Results

Once a notification is received, the HipChat app icon in the tray should bounce

Actual Results

Icon remains static

Workaround

Leave the app open and not focused and the dock icon will bounce in Mac client 4.0.4 (539)