Iview low version component positioning problem, select option positioning problem.

The select of iview is simply a perfect build especially after upgrading to the latest version. But because I used the old version in my project, due to the large amount of work due to the problem of the upgraded version, I can only find another way (hard).
Let’s take a look at my question first. There is no option to hide the selected value in the lower version. When I select too many, the drop-down box flies. When I click the drop-down box, the drop-down box disappears. It should be up and down. The place is not.

So I looked up and finally found it.

Go to the position where all the select boxes have no content. Why is this? I clicked on the style and saw a postion

. Everyone should have an idea here. Yes, when using the lower version of i-select, add a style:postion:xxx; to the select to solve the problem. Cooperate with attribute placement effect and good.