Bug Report

• Package version(s): 5.45.3
• Browser and OS versions: IE11 (11.125.16299.0)

Priorities and help requested

Requested priority: Normal

Describe the issue:

1. Use following code with any itemLimit:
   <NormalPeoplePicker
   onChange={(val) => {}}
   onResolveSuggestions={this._onFilterChanged}
   itemLimit={5} />
   (_onFilterChanged implementation is from PeoplePicker example on
   https://developer.microsoft.com/en-us/fabric#/components/peoplepicker)

2. Write something in the people picker

3. See suggestions

4. First one is automatically highlighted

5. Hit enter or tab on keyboard (do not use mouse)

Actual behavior:

Component rendering crashes with following error:
Exception in NormalPeoplePicker.render(): TypeError: Unable to get property 'inputElement' of undefined or null reference
at BasePicker.prototype.renderSuggestions (.../Scripts/submit-content-for-approval.js:42290:10)
at BasePicker.prototype.render (.../Scripts/submit-content-for-approval.js:42272:10)
at obj[methodName] (.../Scripts/submit-content-for-approval.js:16994:22)
at h (.../lib/react/react-dom.production.min.js:130:356)
at beginWork (.../lib/react/react-dom.production.min.js:133:473)
at d (.../lib/react/react-dom.production.min.js:158:387)
at f (.../lib/react/react-dom.production.min.js:159:212)
at g (.../lib/react/react-dom.production.min.js:159:462)
at t (.../lib/react/react-dom.production.min.js:167:1)
at x (.../lib/react/react-dom.production.min.js:166:247)

Expected behavior:

The item is selected the same way as by clicking it.

Note that this works fine on all other common browsers, like Chrome, Firefox, even Edge.