Date field size is wrong

[dethegeek]

I define a conditional date field. It must show only if a dropdown field contains a specific value.

When the dropdown contains the expected value, the date field appears as expected, but its width is near of 0. I cannot see the date I pick up in the JS calendar.

[neeftarah]

This bug is also present for datetime field.

It is due to a bug of ExtJS when add a date or datetime field in an hidden block (whitch is hidden before ExtJS is completely loaded).