Validation information can not disappeared automatically

Hi,
Bug.

1. When the grid editing mode is Popup.

The following test cases are based on 'Add new item' function.
For the Required Validation:
Case 1:
Step 1: (Normal)
Delete all default in textbox and leave this textbox(use mouse to leave textbox), then show a tips. The means this textbox cannot be null.

Step 2:(Bug)
Input a value in textbox,
If Step1 use mouse to leave this textbox, then both use mouse and press tab to leave textbox are the tips disappeared.
But Step1 use Tab to leave this textbox, then only press Tab to leave textbox the tips is can be disappeared at this step.
In actually, whether I leave this textbox use anyway at step1, that can not to impact the tips' appear/disappear.

Step 3:(Bug)
Delete the value in this textbox again.
If Step2 use mouse to leave this textbox, then both use mouse and press tab to leave textbox are the tips appeared.
But Step2 use Tab to leave this textbox, then only press Tab to leave textbox the tips is can be appeared at this step.

Step4:(Bug)
Input a value in this textbox again and leave this textbox(use mouse / press tab), but the tips can not disappeared.

For data type Validation:
The field's definition:

Case1:
Step1:(Normal)
Change this textbox value from default value '0' into a character(eg:'f'), and leave this textbox(mouse/tab), the tips is appeared.

Step2:(Bug)
Change this textbox value from 'f' into a number.
If use mouse to leave textbox at step1. Then both use mouse and tab to leave textbox are the tips disappeared.
But if use tab to leave textbox at step1. Then only use tab to leave textbox, the tips is can be disappeared.

Step3:(Bug)
Change this textbox value from a number into 'f'.
About leave textbox has same problem with Step2.
The tips is appeared.

Step4:(Bug)
Change this textbox's value from 'f' into a number.
Both use mouse and tab to leave this textbox are the tips can not be disappeared.

Case2:
I had assignment the UI-Culture to the 'zh-CN' (Chinese).

But the tips can not be localized.

About Input:
If double click to select all text in the textbox, I can't to input any value.
I must Click the textbox first and double click to select all text in the textbox, that can input value.