maybe window focus should be ignored so focus is left as what it was

but with this at least clicking on a text input will not make you
be thrown into composer instead

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/structures/MatrixChat.js

@@ -906,7 +906,9 @@ module.exports = React.createClass({
     },
 
     onFocus: function(ev) {
+        if (document.activeElement.textLength === undefined) {
             dis.dispatch({action: 'focus_composer'});
+        }
     },
 
     showScreen: function(screen, params) {