I assume this was a fixed bug since it no longer occurs with latest version of SAPUI5 1.133.0
https://jsfiddle.net/guillaume_hrc/7z5u94qe/32/
<script id='sap-ui-bootstrap'
type='text/javascript'
src="https://ui5.sap.com/1.133.0/resources/sap-ui-core.js"
...
>