I am evaluating webix for use in our project. So far it looks promising.
I have found one bug:
When resizing children (resizing whole window / using resizer) height of textarea is not updated (when labelPosition=top)
http://webix.com/snippet/f101b056
may be regression: http://forum.webix.com/discussion/3834/inputheight-not-processed-if-labelposition-top
(partial) solution: comment out line 8028 (webix_debug.js 2.5.14)
7887: webix.protoUI({
7888: name:“text”,
8021: $setSize:
8028: //if (!config.inputHeight))