Error Display When Searching for Assigned To on Work Items

**Describe the bug**
A clear and concise description of what the bug is.

**To Reproduce**
Steps to reproduce the behavior:
1. Navigate to Work Items on an Activated Project
2. Click New Work Item
3. Type a few letters like "ju" into Assigned To field
4. Click 'Show All Results fo "ju"'

**Behavior**
* Error Below Displays

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[Cannot read property 'ma' of undefined]
Failing descriptor: {markup://lightning:deprecatedOverlayUtils}

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**