keyboard shortcut Control+tab to change between rooms and people consume 100%+ of CPU performance.

Summary

Quick change rooms using keyboard shortcuts (control+tab) consume 100%+ of CPU performance

Environment

• MacOS X 10.10 & HipChat client 4.0.4(539)
• MacOS X 10.11 & HipChat client 4.0.4(539)

Steps to Reproduce

1. Open the Activity monitor and select CPU
2. Use the keyboard shortcut control+tab to change between rooms and people repeatedly
3. The client process will consume 100%+ of the CPU performance

Expected Results

The client shouldn't consume 100% of the CPU performance to change between rooms and people

Actual Results

The client will consume 100%+ of the CPU performance eventually freezing the client or causing lag in typing

Workaround

Please use the mouse pointer to change between rooms and people.