Client Preferences are not saved when connecting to HipChat Server version 1.3.1 or older

Summary

When connecting to HipChat Server v1.3.1 or older, client Preferences (light/dark theme, per room notifications, etc.) are not saved.

Environment

• HipChat Server v1.3.1 or older
• HipChat for Windows v4.0 or newer

Steps to Reproduce

1. Log into HipChat for Windows v4.0
2. Change and save some Preferences (Per room notifications, dark/light theme, etc.)

Expected Results

Selected Preferences will be maintained.

Actual Results

Preferences revert to their default values.