# Design mode doesn't look exactly the same as actual?

**URL:** <https://forum.kirupa.com/t/design-mode-doesnt-look-exactly-the-same-as-actual/296613>\
**Category:** flash\
**Created:** [September 17, 2009, 9:06am UTC](https://forum.kirupa.com/t/design-mode-doesnt-look-exactly-the-same-as-actual/296613 "2009-09-17T09:06:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cpthk](https://avatars.discourse-cdn.com/v4/letter/c/aca169/32.png) [@cpthk](https://forum.kirupa.com/u/cpthk)\
**Post date:** [September 17, 2009, 9:06am UTC](https://forum.kirupa.com/t/design-mode-doesnt-look-exactly-the-same-as-actual/296613/1 "2009-09-17T09:06:45Z")

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Hi:

I have been used flex for very long time. I realized there is a major issue that the design mode in flex builder doesn’t look exactly the same as actual. I usually align many panels, datagrid…etc up and down. The design mode has a very good function to magnet controls together. The actual look sometimes are little higher/longer, then it many look bad or even covers the panel/datagrid under it a little bit. I know of course I could use VBox for flex align controls during runtime, but sometimes I just really need x, y positions. Is this a bug or just too difficult for flex to calculate the real height?

What’s your solution?