On Firefox Special:Move throws:
```
TypeError: this.namespace is undefined[Learn More] mw.widgets.ComplexTitleInputWidget.js:111:3
mw.widgets.ComplexTitleInputWidget.prototype.setDisabled http://localhost:8080/w/resources/src/mediawiki.widgets/mw.widgets.ComplexTitleInputWidget.js:111:3
OoUiWidget http://localhost:8080/w/resources/lib/oojs-ui/oojs-ui-core.js:1601:2
MwWidgetsComplexTitleInputWidget http://localhost:8080/w/resources/src/mediawiki.widgets/mw.widgets.ComplexTitleInputWidget.js:23:3
OO.ui.Element.static.unsafeInfuse http://localhost:8080/w/resources/lib/oojs-ui/oojs-ui-core.js:789:8
OO.ui.Element.static.infuse http://localhost:8080/w/resources/lib/oojs-ui/oojs-ui-core.js:658:12
OO.ui.infuse http://localhost:8080/w/resources/lib/oojs-ui/oojs-ui-core.js:340:9
<anonymous> http://localhost:8080/w/resources/src/mediawiki.special/mediawiki.special.movePage.js:6:2
fire http://localhost:8080/w/load.php:3148:10
fireWith http://localhost:8080/w/load.php:3260:7
ready http://localhost:8080/w/load.php:3472:3
completed http://localhost:8080/w/load.php:3503:3
```
on [[ https://phabricator.wikimedia.org/source/mediawiki/browse/master/resources/src/mediawiki.widgets/mw.widgets.ComplexTitleInputWidget.js;a26885bf978ff6f973abd3d9ead4fb08087a30b1$111 | resources/src/mediawiki.widgets/mw.widgets.ComplexTitleInputWidget.js line 111 ]].