Combo in window - text cursor disappear when "This field is required" message appears

[elmalinka]

Description
I have problem with combo in window (when the same combo is located in site's body, it works ok).

Steps

1. I click combo,
2. "This field is required" message appears,
3. I start typing letters,

The result occurs
the first letter appears in combo but after that text cursor disappears and I cannot type the second and more letters.

The result expected
I would like to type more than one letters to filter combo values without clicking second time in combo;

In slightly different case, it works ok, steps:
I move mouse over combo, "This field is required" message appears and then I click in combo (message disappears), typing works ok, combo is filtered based on typed letters.


Example:



Ext versions:
* 4.2.0 - not working, movie: https://drive.google.com/file/d/0B2S...ew?usp=sharing

* 4.2.1/5.0.0 - text cursor disappears when I start typing letters of item that exists in combo; if I start typing for example 'ddd' (there is no item started with 'ddd' in combo) it works ok (text cursor doesn't disappear), movie: https://drive.google.com/file/d/0B2S...ew?usp=sharing

* 5.0.1 - if I start typing letters of item that exists in combo - after typing second letter, the first letter disappears, movie: https://drive.google.com/file/d/0B2S...ew?usp=sharing
* 5.1.0 - it works ok

Browsers:
* Firefox, v34
* Chrome, v44


I'm using ext 4.2.3, is it possible to resolve it for this version?

[tristan.lee]

Thanks for reporting this. I have filed this as a bug under EXTJS-19227.