David,

Damn man, does the UT pay Sergey and you? ;-)

I didn't describe the problem correctly...

In my case, when the tab position is set to Left the pageframe sizes itself without including the tab height but the page positioning (the page top) is as if the tabs were there...

Setting my element container on the each page to the design-time height in the INIT method fixed the problem for me. There is definitely something wrong with the rendering of the page.

FOR EACH loPage IN THIS.PAGES
  loPage.pgfElement.HEIGHT = 311 && Design-time Height
ENDFOR

I first tried the below code in the INIT of the pageframe with no luck.

THIS.Height = 313  && Design-time Height
THIS.Resize()
DODEFAULT()

>Will,
>
>I just dropped a baseclass pgf on a form, put another on Page1 and set it left tabsand I don't see any position/size difference between designtime and runtime of the form.
>
>>Anyone else have problems using pageframes with left tabs? The pageframe resizes at run-time. The move is the about tab height if they were on the top. The pageframe in question is on the page of another pageframe.